SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

              [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                For the quarterly period ended September 30, 2003

                                       OR

              [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

            For the transition period from             to
                                           -----------    -----------

                          Commission file number 1-9210

                              ---------------------

                        OCCIDENTAL PETROLEUM CORPORATION
             (Exact name of registrant as specified in its charter)

                    DELAWARE                              95-4035997
        (State or other jurisdiction of                (I.R.S. Employer
         incorporation or organization)              Identification No.)

               10889 WILSHIRE BOULEVARD
               LOS ANGELES, CALIFORNIA                            90024
       (Address of principal executive offices)                (Zip Code)

                                 (310) 208-8800
              (Registrant's telephone number, including area code)

                              ---------------------
     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.      Yes [X]      No
                                                  -----       -----

     Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act).    Yes [X]      No
                                                  -----       -----

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.


                Class                          Outstanding at September 30, 2003
- -------------------------------------          ---------------------------------
     Common stock $.20 par value                       385,125,026 shares

OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES CONTENTS PAGE Part I Financial Information Item 1. Financial Statements Consolidated Condensed Balance Sheets -- September 30, 2003 and December 31, 2002 2 Consolidated Condensed Statements of Operations -- Three and nine months ended September 30, 2003 and 2002 4 Consolidated Condensed Statements of Cash Flows -- Nine months ended September 30, 2003 and 2002 5 Notes to Consolidated Condensed Financial Statements 6 Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations 14 Item 3. Quantitative and Qualitative Disclosures About Market Risk 25 Item 4. Controls and Procedures 25 Part II Other Information Item 1. Legal Proceedings 26 Item 6. Exhibits and Reports on Form 8-K 26 1

PART I FINANCIAL INFORMATION ITEM 1. FINANCIAL STATEMENTS OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES CONSOLIDATED CONDENSED BALANCE SHEETS SEPTEMBER 30, 2003 AND DECEMBER 31, 2002 (Amounts in millions) 2003 2002 ================================================================================ ========== ========== ASSETS CURRENT ASSETS Cash and cash equivalents $ 529 $ 146 Receivables, net 1,053 1,079 Inventories 530 491 Prepaid expenses and other 161 157 ---------- ---------- Total current assets 2,273 1,873 LONG-TERM RECEIVABLES, net 262 275 INVESTMENTS IN UNCONSOLIDATED ENTITIES 1,106 1,056 PROPERTY, PLANT AND EQUIPMENT, net of accumulated depreciation, depletion and amortization of $7,187 at September 30, 2003 and $6,395 at December 31, 2002 13,815 13,036 OTHER ASSETS 250 308 ---------- ---------- $ 17,706 $ 16,548 ================================================================================ ========== ========== The accompanying notes are an integral part of these financial statements. 2

OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES CONSOLIDATED CONDENSED BALANCE SHEETS SEPTEMBER 30, 2003 AND DECEMBER 31, 2002 (Amounts in millions) 2003 2002 ================================================================================ ========== ========== LIABILITIES AND EQUITY CURRENT LIABILITIES Current maturities of long-term debt and capital lease liabilities $ 28 $ 206 Accounts payable 884 785 Accrued liabilities 887 1,107 Domestic and foreign income taxes 162 137 ---------- ---------- Total current liabilities 1,961 2,235 ---------- ---------- LONG-TERM DEBT, net of current maturities and unamortized discount 4,051 3,997 ---------- ---------- OCCIDENTAL OBLIGATED MANDATORILY REDEEMABLE TRUST PREFERRED SECURITIES OF A SUBSIDIARY TRUST HOLDING SOLELY SUBORDINATED NOTES OF OCCIDENTAL 454 455 ---------- ---------- DEFERRED CREDITS AND OTHER LIABILITIES Deferred and other domestic and foreign income taxes 1,071 982 Other 2,351 2,228 ---------- ---------- 3,422 3,210 ---------- ---------- MINORITY INTEREST 323 333 ---------- ---------- STOCKHOLDERS' EQUITY Common stock, at par value 77 75 Additional paid-in capital 4,160 3,967 Retained earnings 3,248 2,303 Accumulated other comprehensive income 10 (27) ---------- ---------- 7,495 6,318 ---------- ---------- $ 17,706 $ 16,548 ================================================================================ ========== ========== The accompanying notes are an integral part of these financial statements. 3

OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2003 AND 2002 (Amounts in millions, except per-share amounts) Three Months Ended Nine Months Ended September 30 September 30 ------------------------- ------------------------- 2003 2002 2003 2002 ================================================================= ========== ========== ========== ========== REVENUES Net sales $ 2,319 $ 1,963 $ 6,956 $ 5,353 Interest, dividends and other income 21 21 72 72 Gains on disposition of assets, net 9 11 31 10 ---------- ---------- ---------- ---------- 2,349 1,995 7,059 5,435 COSTS AND OTHER DEDUCTIONS Cost of sales 1,282 1,125 3,844 3,237 Selling, general and administrative and other operating expenses 216 207 653 519 Environmental remediation -- 8 13 8 Exploration expense 37 29 94 115 Interest and debt expense, net 72 79 262 231 ---------- ---------- ---------- ---------- 1,607 1,448 4,866 4,110 ---------- ---------- ---------- ---------- Income before taxes and other items 742 547 2,193 1,325 Provision (benefit) for domestic and foreign income and other taxes 300 (168) 923 179 Minority interest 11 22 49 63 (Income) loss from equity investments (15) 217 8 243 ---------- ---------- ---------- ---------- Income from continuing operations 446 476 1,213 840 Discontinued operations, net -- (74) -- (78) Cumulative effect of changes in accounting principles, net -- -- (68) (95) ---------- ---------- ---------- ---------- NET INCOME AND EARNINGS APPLICABLE TO COMMON STOCK $ 446 $ 402 $ 1,145 $ 667 ========== ========== ========== ========== BASIC EARNINGS PER COMMON SHARE Income from continuing operations $ 1.16 $ 1.26 $ 3.17 $ 2.23 Discontinued operations, net -- (.19) -- (.21) Cumulative effect of changes in accounting principles, net -- -- (.18) (.25) ---------- ---------- ---------- ---------- Basic earnings per common share $ 1.16 $ 1.07 $ 2.99 $ 1.77 ========== ========== ========== ========== DILUTED EARNINGS PER COMMON SHARE Income from continuing operations $ 1.14 $ 1.25 $ 3.14 $ 2.22 Discontinued operations, net -- (.19) -- (.21) Cumulative effect of changes in accounting principles, net -- -- (.18) (.25) ---------- ---------- ---------- ---------- Diluted earnings per common share $ 1.14 $ 1.06 $ 2.96 $ 1.76 ========== ========== ========== ========== DIVIDENDS PER COMMON SHARE $ .26 $ .25 $ .78 $ .75 ========== ========== ========== ========== BASIC SHARES OUTSTANDING 385.5 376.8 382.6 375.7 ========== ========== ========== ========== DILUTED SHARES 391.1 380.4 387.0 378.8 ================================================================= ========== ========== ========== ========== The accompanying notes are an integral part of these financial statements. 4

OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2003 AND 2002 (Amounts in millions) 2003 2002 ===================================================================================== ========== ========== CASH FLOW FROM OPERATING ACTIVITIES Income from continuing operations $ 1,213 $ 840 Adjustments to reconcile income to net cash provided by operating activities: Depreciation, depletion and amortization of assets 866 759 Deferred income tax provision (benefit) 112 (265) Other noncash charges to income 186 86 Gains on disposition of assets, net (31) (10) Loss from equity investments 8 243 Dry hole and impairment expense 50 50 Changes in operating assets and liabilities (13) (26) Other operating, net (129) (141) ---------- ---------- Operating cash flow from continuing operations 2,262 1,536 Operating cash flow from discontinued operations -- (6) ---------- ---------- Net cash provided by operating activities 2,262 1,530 ---------- ---------- CASH FLOW FROM INVESTING ACTIVITIES Capital expenditures (1,151) (840) Sale of businesses and disposal of property, plant and equipment, net 67 12 Purchases of businesses, net (262) (98) Equity investments and other, net (108) 32 ---------- ---------- Investing cash flow from continuing operations (1,454) (894) Investing cash flow from discontinued operations -- (4) ---------- ---------- Net cash used by investing activities (1,454) (898) ---------- ---------- CASH FLOW FROM FINANCING ACTIVITIES Proceeds from long-term debt 298 -- Repurchase of trust preferred securities (1) (7) Purchases for natural gas delivery commitment -- (95) Buyout of natural gas delivery commitment, net -- (179) Payments of long-term debt and capital lease liabilities (596) (29) Proceeds from issuance of common stock 8 14 Cash dividends paid (292) (281) Stock options exercised 159 47 Other financing, net (1) (2) ---------- ---------- Net cash used by financing activities (425) (532) ---------- ---------- Increase in cash and cash equivalents 383 100 Cash and cash equivalents--beginning of period 146 198 ---------- ---------- Cash and cash equivalents--end of period $ 529 $ 298 ===================================================================================== ========== ========== The accompanying notes are an integral part of these financial statements. 5

OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS September 30, 2003 1. General In these unaudited consolidated condensed financial statements, "Occidental" means Occidental Petroleum Corporation, entities where it owns a majority voting interest, its undivided interest in exploration and production ventures, and variable interest entities where it is the primary beneficiary. Certain information and disclosures normally included in notes to consolidated financial statements have been condensed or omitted pursuant to the Securities and Exchange Commission's rules and regulations, but resultant disclosures are in accordance with accounting principles generally accepted in the United States of America as they apply to interim reporting. The consolidated condensed financial statements should be read in conjunction with the consolidated financial statements and the notes to those financial statements in Occidental's Annual Report on Form 10-K for the year ended December 31, 2002 (2002 Form 10-K). In the opinion of Occidental's management, the accompanying consolidated condensed financial statements contain all adjustments (consisting only of normal recurring adjustments) necessary to fairly present Occidental's consolidated financial position as of September 30, 2003, the consolidated statements of operations for the three and nine months then ended and the consolidated cash flows for the nine months then ended. The income and cash flows for the period ended September 30, 2003, are not necessarily indicative of the income or cash flows to be expected for the full year. Certain financial statements and notes for the prior year have been changed to conform to the 2003 presentation. Refer to Note 1 to the consolidated financial statements in the 2002 Form 10-K for a summary of significant accounting policies. 2. Accounting Changes See Notes 8 and 9 regarding accounting changes related to asset retirement obligations and variable interest entities, respectively. In May 2003, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards (SFAS) No. 150, "Accounting for Certain Financial Instruments with Characteristics of Both Liabilities and Equity." SFAS No. 150 establishes accounting standards for how a company classifies and measures financial instruments that have characteristics of liabilities and equity. Occidental adopted the provisions of this statement on July 1, 2003. As a result of the adoption, Occidental's mandatorily redeemable trust preferred securities are now classified as a liability and the payments to the holders of the securities, which were previously recorded as minority interest on the statement of operations, are recorded as interest expense. In April 2003, the FASB issued SFAS No. 149, "Amendment of Statement 133 on Derivative Instruments and Hedging Activities." SFAS No. 149 amends and clarifies financial accounting and reporting for derivative instruments. This statement is effective for contracts entered into or modified after June 30, 2003. Occidental adopted this statement in the third quarter of 2003 and it did not have a material effect on its financial statements. In January 2003, the FASB issued FASB Interpretation No. (FIN) 45, "Guarantor's Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others." FIN 45 requires a company to recognize a liability for the obligations it has undertaken in issuing a 6

guarantee. This liability would be recorded at the inception of a guarantee and would be measured at fair value. FIN 45 also requires certain disclosures related to guarantees, which are included in Note 11. Occidental adopted the measurement provisions of this statement in the first quarter of 2003 and it did not have an effect on the financial statements when adopted. In December 2002, the FASB issued SFAS No. 148, "Accounting for Stock-Based Compensation - Transition and Disclosure." SFAS No. 148 permits two additional transition methods for companies that elect to adopt the fair-value-based method of accounting for stock-based employee compensation. The statement also expands the disclosure requirements for stock-based compensation (See Note 13). The provisions of this statement apply to financial statements for fiscal years ending after December 15, 2002. The statement did not have a material effect on the financial statements when adopted. Since 1999, Occidental has accounted for certain energy-trading contracts in accordance with Emerging Issues Task Force (EITF) Issue No. 98-10, "Accounting for Contracts Involved in Energy Trading and Risk Management Activities." EITF Issue No. 98-10 required that all energy-trading contracts must be marked to fair value with gains and losses included in earnings, whether the contracts were derivatives or not. In October 2002, the EITF rescinded EITF Issue No. 98-10 thus precluding both mark-to-market accounting for all energy-trading contracts that are not derivatives and fair value accounting for inventories purchased from third parties. Also, the rescission requires derivative gains and losses to be presented net on the income statement, whether or not they are physically settled, if the derivative instruments are held for trading purposes. Occidental adopted this accounting change in the first quarter of 2003 and recorded a charge for the cumulative effect of a change in accounting principles of approximately $18 million, after tax. In July 2002, the FASB issued SFAS No. 146, "Accounting for Costs Associated with Exit or Disposal Activities." SFAS No. 146 requires that a liability be recognized for exit and disposal costs only when the liability has been incurred and when it can be measured at fair value. The statement is effective for exit and disposal activities that are initiated after December 31, 2002. Occidental adopted SFAS No. 146 in the first quarter of 2003 and it did not have a material effect on its financial statements. Occidental has classified all of its mineral drilling rights as tangible assets in property, plant and equipment. The FASB and the staff of the Securities and Exchange Commission are considering a possible interpretation of SFAS No. 141, "Business Combinations", paragraph A14.d. (7), under which contract-based mineral rights acquired after June 30, 2001 may have to be classified as intangible assets. Occidental is in the process of determining the effect of this potential change on the financial statements; however, it does not expect the resolution of the issue to materially affect its results of operations. 3. Asset Acquisitions and Dispositions and Other Commitments In 2003, Occidental made several oil and gas acquisitions in the Permian Basin for approximately $251 million in cash and sold approximately $34 million of these assets shortly thereafter. In April 2003, Occidental exercised its purchase option related to the OxyVinyls, L.P., LaPorte, Texas VCM plant lease for approximately $180 million. In the first quarter of 2003, Occidental exercised purchase options on railcar leases for a total of $44 million. 7

4. Comprehensive Income The following table presents Occidental's comprehensive income items (in millions): Periods Ended September 30 ------------------------------------------------------- Three Months Nine Months ------------------------- ------------------------- 2003 2002 2003 2002 ================================================== ========== ========== ========== ========== Net income $ 446 $ 402 $ 1,145 $ 667 Other comprehensive income items Foreign currency translation adjustments 3 12 27 -- Derivative activity 11 (9) 6 (18) Unrealized gains (losses) on securities 9 (50) 8 32 Minimum pension liability adjustment -- -- (4) -- ---------- ---------- ---------- ---------- Other comprehensive income (loss), net of tax 23 (47) 37 14 ---------- ---------- ---------- ---------- Comprehensive income $ 469 $ 355 $ 1,182 $ 681 ========== ========== ========== ========== 5. Supplemental Cash Flow Information During the nine months ended September 30, 2003 and 2002, net cash payments (net of refunds) for federal, foreign and state income taxes totaled approximately $323 million and $(3) million, respectively. Interest paid (net of interest capitalized) totaled approximately $276 million and $212 million for the nine months ended September 30, 2003 and 2002, respectively. 6. Inventories A portion of inventories is valued under the LIFO method. The valuation of LIFO inventory for interim periods is based on management's estimates of year-end inventory levels and costs. Inventories consist of the following (in millions): Balance at September 30, December 31, 2003 2002 ========================= ==================== ==================== Raw materials $ 59 $ 54 Materials and supplies 145 125 Finished goods 333 319 ---------- ---------- 537 498 LIFO adjustment (7) (7) ---------- ---------- Total $ 530 $ 491 ========== ========== 7. Derivative Activities For the three and nine months ended September 30, 2003, the results of operations included a net pre-tax gain of $15 million and $38 million, respectively, related to derivative mark-to-market adjustments. For the three and nine months ended September 30, 2002, the results of operations included a net pre-tax loss of $4 million and $0.2 million, respectively, related to derivative mark-to-market adjustments. The amount of interest expense recorded in the income statement was lower by approximately $15 million and $41 million for the three and nine months ended September 30, 2003, respectively, to reflect net pre-tax gains from fair-value hedges. The amount of interest expense recorded in the income statement was lower by approximately $11 million and $32 million for the three and nine months ended September 30, 2002, respectively, to reflect net pre-tax gains from fair-value hedges. 8

The following table summarizes after-tax derivative activity recorded in other comprehensive income (OCI) for the nine months ended September 30, 2003 and 2002 (in millions): 2003 2002 ======================================================= ========== ========== Beginning Balance $ (26) $ (20) Losses from changes in current cash flow hedges -- (26) Amount reclassified to income from the expiration of cash flow hedges 6 8 ---------- ---------- Ending Balance $ (20) $ (38) ======================================================= ========== ========== During the next twelve months, Occidental expects that $3 million of net derivative after-tax gains included in OCI, based on their valuation at September 30, 2003, will be reclassified into earnings. Hedge ineffectiveness did not have a significant impact on earnings for the three and nine months ended September 30, 2003 and 2002. 8. Asset Retirement Obligations In June 2001, the FASB issued SFAS No. 143, "Accounting for Asset Retirement Obligations." SFAS No. 143 requires companies to recognize the fair value of a liability for an asset retirement obligation in the period in which the liability is incurred if there is a legal obligation to dismantle the asset and reclaim or remediate the property at the end of its useful life. When the liability is initially recorded, the company capitalizes the cost into property, plant and equipment. Over time, the liability is accreted and the cost is depreciated, both over the asset's useful life. Occidental's asset retirement obligations primarily relate to the cost of plugging and abandoning wells, well-site cleanup, facilities abandonment and environmental closure and post-closure care. Occidental adopted SFAS No. 143 in the first quarter of 2003. The initial adoption resulted in an after-tax charge of $50 million, which was recorded as a cumulative effect of a change in accounting principles. The adoption increased net property, plant and equipment by $73 million, increased asset retirement obligations by $151 million and decreased deferred tax liabilities by $28 million. The pro-forma asset retirement obligation, if the adoption of this statement had occurred on January 1, 2002, would have been $131 million at January 1, 2002 and $151 million at December 31, 2002. The following table summarizes the activity of the asset retirement obligations (in millions): Three Months Nine Months Ended Ended September 30, September 30, 2003 2003 ============================================================ ==================== ==================== Beginning balance $ 155 $ -- Cumulative effect of change in accounting principles -- 150 Liabilities settled in the period (2) (7) Accretion expense 3 8 Acquisitions and other 1 3 Revisions to estimated cash flows (1) 2 -------------------- -------------------- Ending balance $ 156 $ 156 ============================================================ ==================== ==================== 9

9. Variable Interest Entities (VIEs) In January 2003, the FASB issued FIN 46, "Consolidation of Variable Interest Entities." FIN 46 requires a company to consolidate a variable interest entity if it is designated as the primary beneficiary of that entity even if the company does not have a majority of voting interests. A VIE is generally defined as an entity whose equity is unable to finance its activities or whose owners lack the risks and rewards of ownership. The statement also has disclosure requirements for all the VIEs of a company, even if the company is not the primary beneficiary. The provisions of this statement apply at inception for any entity created after January 31, 2003. Occidental adopted the provisions of this Interpretation for its existing entities on April 1, 2003 which resulted in the consolidation of its OxyMar VCM joint venture that was previously accounted for as an equity investment. As a result of the OxyMar consolidation, assets increased by $166 million and liabilities increased by $178 million. There was no material effect on net income as a result of the consolidation. In September 2003, Marubeni indicated it would exercise its option to put its interest in OxyMar to Occidental by paying approximately $25 million to Occidental. In connection with the transfer, which is expected to be complete in April 2004, Occidental will assume Marubeni's guarantee of OxyMar's debt. As all the OxyMar debt is already consolidated in Occidental's financial statements with the adoption of FIN 46, the exercise of the put will not have a material effect on Occidental's financial condition or results of operations. Occidental has a 50-percent interest in Elk Hills Power LLC (EHP), a limited liability company that operates a gas-fired, power-generation plant in California. EHP is a VIE under the provisions of FIN 46. However, Occidental is not the primary beneficiary of EHP and therefore accounts for it as an equity investment. In January 2002, EHP entered into a $400 million loan facility, 50 percent of which is guaranteed by Occidental. The loan facility was increased to $425 million in May 2003. 10. Environmental Expenditures Occidental's operations in the United States are subject to stringent federal, state and local laws and regulations relating to improving or maintaining the quality of the environment. Foreign operations also are subject to environmental-protection laws. The laws that require or address environmental remediation may apply retroactively to past waste disposal practices and releases. In many cases, the laws apply regardless of fault, legality of the original activities or current ownership or control of sites. Occidental Petroleum Corporation (OPC) or certain of its subsidiaries are currently participating in environmental assessments and remediation activities under these laws at federal Superfund sites and other sites subject to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), comparable state sites and other remediation sites, including Occidental facilities and previously owned sites. The following table presents Occidental's environmental remediation reserves at September 30, 2003, grouped by three categories of environmental remediation sites ($ amounts in millions): # of Sites Reserve =================================== =============== =============== CERCLA & Equivalent Sites 129 $ 241 Active Facilities 14 46 Closed or Sold Facilities 41 56 --------------- --------------- Total 184 $ 343 =================================== =============== =============== In determining the environmental remediation reserves, Occidental refers to currently available information, including relevant past experience, available technology, regulations in effect, the timing of remediation and cost-sharing arrangements. Occidental expects that it will continue to incur additional liabilities beyond those recorded for environmental remediation at these and other sites. 10

The range of reasonably possible loss for existing environmental remediation matters could be up to $400 million beyond the amount accrued. Shown below is additional detail regarding reserves for CERCLA or CERCLA-equivalent proceedings in which OPC or certain of its subsidiaries were involved at September 30, 2003 ($ amounts in millions): Description # of Sites Reserve =================================== =============== =============== Minimal/No Exposure (a) 109 $ 5 Reserves between $1-10 MM 13 52 Reserves over $10 MM 7 184 --------------- --------------- Total 129 $ 241 =================================== =============== =============== (a) Includes 33 sites for which Maxus Energy Corporation has retained the liability and indemnified Occidental, 7 sites where Occidental has denied liability without challenge, 55 sites where Occidental's reserves are less than $50,000 each, and 14 sites where reserves are between $50,000 and $1 million each. Refer to Note 8 to the consolidated financial statements in the 2002 Form 10-K for additional information regarding Occidental's environmental expenditures. 11. Lawsuits, Claims, Commitments, Contingencies and Related Matters OPC and certain of its subsidiaries have been named in a substantial number of lawsuits, claims and other legal proceedings. These actions seek, among other things, compensation for alleged personal injury, breach of contract, property damage, punitive damages, civil penalties or other losses; or injunctive or declaratory relief. OPC and certain of its subsidiaries also have been named in proceedings under CERCLA and similar federal, state and local environmental laws. These environmental proceedings seek funding or performance of remediation and, in some cases, compensation for alleged property damage, punitive damages and civil penalties; however, Occidental is usually one of many companies in these proceedings and has to date been successful in sharing response costs with other financially sound companies. With respect to all such lawsuits, claims and proceedings, including environmental proceedings, Occidental accrues reserves when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. During the course of its operations, Occidental is subject to audit by tax authorities for varying periods in various federal, state, local and foreign tax jurisdictions. Taxable years prior to 1997 are closed for U.S. federal income tax purposes. Taxable years 1997 through 2000 are in various stages of audit by the Internal Revenue Service. Disputes arise during the course of such audits as to facts and matters of law. As mentioned in Note 2, Occidental is required under FIN 45 to disclose information relating to guarantees issued by Occidental and outstanding at September 30, 2003. These guarantees encompass performance bonds, letters of credit, indemnities, commitments and other forms of guarantees provided by Occidental to third parties, mainly to provide assurance that Occidental and/or its subsidiaries and affiliates will meet their various obligations. At September 30, 2003, the notional amount of these guarantees was approximately $510 million. Of this amount, approximately $422 million relates to Occidental's guarantee of equity investees' debt and other commitments. The remaining $88 million relates to various indemnities and guarantees provided to third parties. It is impossible at this time to determine the ultimate liabilities that OPC and its subsidiaries may incur resulting from any lawsuits, claims and proceedings, audits, commitments, contingencies and related matters. If these matters were to be ultimately resolved unfavorably at amounts substantially exceeding Occidental's reserves, an outcome not currently anticipated, it is possible that such outcome could have a material adverse effect upon Occidental's consolidated financial position or results of operations. However, after taking into account reserves, management does not expect the 11

ultimate resolution of any of these matters to have a material adverse effect upon Occidental's consolidated financial position or results of operations. 12. Income Taxes The provision for taxes based on income for the 2003 and 2002 interim periods was computed in accordance with Interpretation No. 18 of Accounting Principles Board Opinion No. 28 on reporting taxes for interim periods and was based on projections of total year pre-tax income excluding significant unusual items. 13. Stock-Based Compensation Occidental accounts for stock options using the intrinsic value method under Accounting Principles Board Opinion (APB) No. 25 and related interpretations. Under this accounting method, Occidental did not record any compensation expense related to its stock option plans. The following table presents pro-forma information as if Occidental had adopted the provisions of SFAS No. 123 at January 1, 2002 (in millions, except per share amounts): Periods Ended September 30 ------------------------------------------------------- Three Months Nine Months ------------------------- ------------------------- 2003 2002 2003 2002 ================================================== ========== ========== ========== ========== Net income $ 446 $ 402 $ 1,145 $ 667 SFAS No. 123 compensation cost, net 5 4 14 14 ---------- ---------- ---------- ---------- Pro-forma net income $ 441 $ 398 $ 1,131 $ 653 ========== ========== ========== ========== Basic earnings per share $ 1.16 $ 1.07 $ 2.99 $ 1.77 SFAS No. 123 compensation cost, net per share 0.01 0.01 0.03 0.03 ---------- ---------- ---------- ---------- Pro-forma basic earnings per share $ 1.15 $ 1.06 $ 2.96 $ 1.74 ========== ========== ========== ========== Diluted earnings per share $ 1.14 $ 1.06 $ 2.96 $ 1.76 SFAS No. 123 compensation cost, net per share 0.01 0.01 0.04 0.04 ---------- ---------- ---------- ---------- Pro-forma diluted earnings per share $ 1.13 $ 1.05 $ 2.92 $ 1.72 ================================================== ========== ========== ========== ========== 14. Investments in Unconsolidated Entities The following table presents Occidental's proportionate interest in the summarized financial information of its equity method investments (in millions): Periods Ended September 30 ------------------------------------------------------- Three Months Nine Months ------------------------- ------------------------- 2003 2002 2003 2002 ================================================== ========== ========== ========== ========== Revenues $ 370 $ 501 $ 1,113 $ 1,490 Costs and expenses (355) (476) (1,121) (1,491) Loss on sale of Equistar -- (242) -- (242) ---------- ---------- ---------- ---------- Net income (loss) $ 15 $ (217) $ (8) $ (243) ================================================== ========== ========== ========== ========== In October 2003, Occidental purchased an additional 2.7 million shares of Lyondell common stock for $12.40 a share totaling approximately $33 million. Occidental now owns approximately 39 million 12

shares of Lyondell common stock, which still represents approximately 22 percent of Lyondell's outstanding common stock. 15. Industry Segments The following table presents Occidental's interim industry segment disclosures (in millions): Oil and Gas Chemical Corporate Total ======================================== ============= ============= ============= ============= Nine months ended September 30, 2003 Net sales $ 4,473 $ 2,368 $ 115 (c) $ 6,956 ============= ============= ============= ============= Pretax operating profit (loss) $ 2,436 $ 147 $ (447)(a) $ 2,136 Income taxes (412) (8) (503)(b) (923) Cumulative effect of changes in accounting principles, net -- -- (68) (68) ------------- ------------- ------------- ------------- Net income (loss) $ 2,024 $ 139 $ (1,018)(d) $ 1,145 ======================================== ============= ============= ============= ============= Nine months ended September 30, 2002 Net sales $ 3,347 $ 2,006 $ -- $ 5,353 ============= ============= ============= ============= Pretax operating profit (loss) $ 1,556 $ (180) $ (357)(a) $ 1,019 Income taxes (339) 397 (237)(b) (179) Discontinued operations, net -- -- (78) (78) Cumulative effect of changes in accounting principles, net -- -- (95) (95) ------------- ------------- ------------- ------------- Net income (loss) $ 1,217 $ 217 (e) $ (767) $ 667 ======================================== ============= ============= ============= ============= (a) Includes unallocated net interest expense, administration expense and other items. (b) Includes unallocated income taxes. (c) During the first quarter of 2003, the Taft cogeneration facility began generating revenue, which is included in the corporate net sales amount. (d) Includes a $61 million pre-tax interest charge ($40 million net of tax) to repay a $450 million 6.4 percent senior note issue that had ten years of remaining life, but was subject to remarketing on April 1, 2003. (e) Includes an after-tax gain of $164 million related to the sale of the Equistar equity investment. 13

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS CONSOLIDATED RESULTS OF OPERATIONS Occidental (as defined in Note 1 to the consolidated condensed financial statements) reported net income for the first nine months of 2003 of $1.1 billion, on net sales of $7.0 billion, compared with net income of $667 million, on net sales of $5.4 billion, for the same period of 2002. Basic earnings per common share were $2.99 for the first nine months of 2003, compared with basic earnings per common share of $1.77 for the same period of 2002. Occidental's net income for the third quarter of 2003 was $446 million, on net sales of $2.3 billion, compared with net income of $402 million, on net sales of $2.0 billion for the same period of 2002. Basic earnings per common share were $1.16 for the third quarter of 2003, compared with $1.07 for the same period of 2002. Net income for the three and nine months ended September 30, 2003, compared with the same periods in 2002, reflected higher worldwide crude oil and natural gas prices and higher crude oil volumes partially offset by lower natural gas volumes and higher operating costs. Additionally, net income in both periods of 2003, compared to the same periods in 2002, increased due to higher chemical prices, partially offset by higher raw material and feedstock costs. The increase in net sales of $356 million and $1.6 billion for the three and nine months ended September 30, 2003, compared with the same periods in 2002, primarily reflected higher crude oil, natural gas and chemical prices and higher crude oil production partially offset by lower natural gas volumes. For the nine months ended September 30, 2003, the gains on disposition of assets, net account included a pre-tax gain of $22 million on the sale of the remaining interests in a subsidiary holding assets in the Gulf of Mexico. The increase in cost of sales of $157 million and $607 million for the three and nine months ended September 30, 2003, compared with the same periods in 2002, primarily reflected higher energy and raw material costs and higher DD&A expense. The increase of $134 million in selling, general, administrative and other operating expenses for the nine months ended September 30, 2003, compared to the same period in 2002, primarily reflected increases in various oil and gas costs, including higher production taxes, higher general and administrative costs and higher other operating costs. The decrease in exploration expense for the nine months ended September 30, 2003, compared with the same period in 2002, was primarily due to lower seismic costs and geological and geophysical costs in 2003. The $31 million increase in interest and debt expense, net for the nine months ended September 30, 2003, compared to the same period in 2002, primarily reflected a pre-tax debt repayment charge of $61 million, partially offset by lower interest rates and lower average debt levels. Loss (income) from equity investments for the three months and nine months ended September 30, 2002 included the pre-tax loss on the sale of the Equistar equity investment. The provision for income taxes for the three and nine months ended September 30, 2002 reflected the tax benefit resulting from the sale of the Equistar equity investment. 14

SEGMENT OPERATIONS The following table sets forth the sales and earnings of each operating segment and corporate items (in millions): Periods Ended September 30 ------------------------------------------------------- Three Months Nine Months ------------------------- ------------------------- 2003 2002 2003 2002 ======================================================= ========== ========== ========== ========== SEGMENT NET SALES Oil and Gas $ 1,480 $ 1,224 $ 4,473 $ 3,347 Chemical 793 739 2,368 2,006 Other 46 -- 115 -- ---------- ---------- ---------- ---------- NET SALES $ 2,319 $ 1,963 $ 6,956 $ 5,353 ========== ========== ========== ========== SEGMENT EARNINGS Oil and Gas $ 660 $ 490 $ 2,024 $ 1,217 Chemical 61 214 139 217 ---------- ---------- ---------- ---------- 721 704 2,163 1,434 UNALLOCATED CORPORATE ITEMS Interest expense, net Debt, net (59) (73) (236) (195) Trust preferred distributions & other (12) (12) (34) (35) Income taxes (160) (105) (505) (250) Other (44) (38) (175) (114) ---------- ---------- ---------- ---------- INCOME FROM CONTINUING OPERATIONS 446 476 1,213 840 Discontinued operations, net -- (74) -- (78) Cumulative effect of changes in accounting principles, net -- -- (68) (95) ---------- ---------- ---------- ---------- NET INCOME $ 446 $ 402 $ 1,145 $ 667 ======================================================= ========== ========== ========== ========== 15

SIGNIFICANT ITEMS AFFECTING EARNINGS Occidental's results of operations often include the effects of significant transactions and events affecting earnings that vary widely and unpredictably in nature, timing and amount. Therefore, management uses a measure called "core earnings", which excludes those items. This non-GAAP measure is not meant to disassociate those items from management's performance, but rather is meant to provide useful information to investors interested in comparing Occidental's earnings performance between periods. Reported earnings are considered representative of management's performance over the long term. Core earnings is not considered to be an alternative to operating income in accordance with generally accepted accounting principles. The following table sets forth the core earnings and significant items affecting earnings for each operating segment and corporate for the three months ended September 30, 2003 and 2002: Three Months Ended September 30 ------------------------------------------------------ Basic Basic (in millions, except per share amounts) 2003 EPS 2002 EPS ================================================== ========== ========== ========== ========== TOTAL REPORTED EARNINGS $ 446 $ 1.16 $ 402 $ 1.07 ========== ========== ========== ========== OIL AND GAS - ----------- Segment Earnings $ 660 $ 490 No significant items affecting earnings -- -- ---------- ---------- Segment Core Earnings 660 490 ---------- ---------- CHEMICAL - -------- Segment Earnings 61 214 Less: Gain on sale of Equistar investment * -- 164 ---------- ---------- Segment Core Earnings 61 50 ---------- ---------- CORPORATE - --------- Results (275) (302) Less: Discontinued operations, net * -- (74) ---------- ---------- TOTAL CORE EARNINGS $ 446 $ 1.16 $ 312 $ 0.83 ================================================== ========== ========== ========== ========== *These amounts are shown after tax. 16

The following table sets forth the core earnings and significant items affecting earnings for each operating segment and corporate for the nine months ended September 30, 2003 and 2002: Nine Months Ended September 30 ------------------------------------------------------ Basic Basic (in millions, except per share amounts) 2003 EPS 2002 EPS ================================================== ========== ========== ========== ========== TOTAL REPORTED EARNINGS $ 1,145 $ 2.99 $ 667 $ 1.77 ========== ========== ========== ========== OIL AND GAS - ----------- Segment Earnings $ 2,024 $ 1,217 No significant items affecting earnings -- -- ---------- ---------- Segment Core Earnings 2,024 1,217 ---------- ---------- CHEMICAL - -------- Segment Earnings 139 217 Less: Gain on sale of Equistar investment * -- 164 ---------- ---------- Segment Core Earnings 139 53 ---------- ---------- CORPORATE - --------- Results (1,018) (767) Less: Debt repayment charge (61) -- Tax effect of pre-tax adjustments 21 -- Discontinued operations, net * -- (78) Changes in accounting principles, net * (68) (95) ---------- ---------- TOTAL CORE EARNINGS $ 1,253 $ 3.27 $ 676 $ 1.80 ================================================== ========== ========== ========== ========== *These amounts are shown after tax. 17

OIL AND GAS SEGMENT Periods Ended September 30 ------------------------------------------------------- Three Months Nine Months ------------------------- ------------------------- Summary of Operating Statistics 2003 2002 2003 2002 ============================================================ ========== ========== ========== ========== NET PRODUCTION PER DAY: CRUDE OIL AND NATURAL GAS LIQUIDS (MBL) United States 259 230 252 231 Latin America 58 51 55 52 Middle East and Other Eastern Hemisphere 101 94 105 103 NATURAL GAS (MMCF) United States 534 564 535 574 Middle East and Other Eastern Hemisphere 71 74 74 58 BARRELS OF OIL EQUIVALENT (MBOE) Consolidated subsidiaries 519 481 514 491 Other interests 27 21 27 22 ---------- ---------- ---------- ---------- Worldwide production 546 502 541 513 - ------------------------------------------------------------ ---------- ---------- ---------- ---------- AVERAGE SALES PRICE: CRUDE OIL ($/BBL) United States $ 28.24 $ 25.75 $ 28.83 $ 22.81 Latin America $ 25.84 $ 25.36 $ 27.29 $ 22.23 Middle East and Other Eastern Hemisphere $ 26.98 $ 26.36 $ 27.47 $ 23.45 NATURAL GAS ($/MCF) United States $ 5.00 $ 2.94 $ 4.93 $ 2.74 Middle East and Other Eastern Hemisphere $ 2.13 $ 1.95 $ 1.98 $ 2.14 ============================================================ ========== ========== ========== ========== Oil and gas segment and core earnings for the three months ended September 30, 2003, were $660 million, compared with $490 million for the same period of 2002. Oil and gas segment and core earnings for the nine months ended September 30, 2003, were $2.0 billion, compared with $1.2 billion for the same period of 2002. The increase in earnings for the three and nine months ended September 30, 2003, compared with the same periods in 2002, primarily reflected higher worldwide crude oil and natural gas prices and higher crude oil volumes partially offset by lower natural gas volumes and higher operating costs. The increase in net sales of $256 million and $1.1 billion for the three and nine months ended September 30, 2003, compared with the same periods in 2002, primarily reflected higher crude oil and natural gas prices and higher crude oil production partially offset by lower natural gas volumes. The average West Texas Intermediate price in the third quarter of 2003 was $30.20 per barrel and the New York Mercantile Exchange (NYMEX) natural gas price for the third quarter of 2003 was $5.59 per thousand cubic feet. A change of 10-cents per million BTUs in NYMEX gas prices impacts quarterly oil and gas segment earnings by $5 million and a $1.00 per barrel change in oil prices has a quarterly impact of $30 million pre-US tax. Occidental expects fourth quarter 2003 oil and gas production to increase modestly due primarily to increased production from the Eden-Yuturi field and other recent discoveries, which will be shipped through the new Ecuador pipeline. The pipeline began operations in September 2003. 18

CHEMICAL SEGMENT Periods Ended September 30 ------------------------------------------------------- Three Months Nine Months ------------------------- ------------------------- Summary of Operating Statistics 2003 2002 2003 2002 ============================================================ ========== ========== ========== ========== MAJOR PRODUCT VOLUMES Chlorine (M Tons) 681 685 2,031 2,121 Caustic Soda (M Tons) 697 716 2,053 2,033 Ethylene Dichloride (M Tons) 135 94 374 386 PVC Resins (MM Lbs.) 1,009 1,022 2,944 3,215 MAJOR PRODUCT PRICE INDEX (BASE: 1987-1990 AVG PRICE = 1.0) Chlorine 1.76 1.37 1.73 0.83 Caustic 0.85 0.61 0.85 0.72 Ethylene Dichloride 1.13 1.30 1.18 1.02 PVC Resins 0.88 0.88 0.91 0.70 ============================================================ ========== ========== ========== ========== Chemical core earnings were $61 million and $139 million, respectively, for the three and nine months ended September 30, 2003, compared with $50 million and $53 million for the same periods of 2002. The increase in core earnings for the three and nine months ended September 30, 2003, compared with the same periods in 2002, is primarily due to higher prices for chlorine, caustic soda and polyvinyl chloride resins (PVC), partially offset by higher raw material and feedstock costs. The net result was higher overall margins. Additionally, for the nine months ended September 30, 2003, the margin improvement was reduced by lower chemical sales volumes. Also, the 2002 chemical earnings reflected the results of the Equistar equity investment which were a gain of $7 million and a loss of $33 million for the three and nine months ended September 30, 2002, respectively. The Equistar equity investment was sold in August 2002. The increase in net sales of $54 million and $362 million for the three and nine months ended September 30, 2003, compared with the same periods in 2002, primarily reflected higher prices for chlorine, caustic soda and PVC. Occidental expects fourth quarter 2003 chemical segment earnings to be between $45 million and $55 million since the first and fourth quarter are typically the weakest quarters for the chemical business due to seasonal factors. CORPORATE AND OTHER The three and nine months ended September 30, 2003 other net sales amounts includes revenues from certain co-generation facilities. The three and nine months ended September 30, 2003 unallocated corporate items - other amounts include the results from the Lyondell equity investment. Unallocated corporate items - income taxes excludes U.S. federal income tax charges and credits allocated to the segments and foreign taxes. For the first nine months of 2003, segment earnings include charges of $(6) million (all for oil and gas). For the first nine months of 2002, segment earnings benefited by $401 million from credits allocated: $(2) million of charges to oil and gas and $403 million of credits to chemical. FINANCIAL CONDITION, LIQUIDITY AND CAPITAL RESOURCES Occidental's net cash provided by operating activities was approximately $2.3 billion and $1.5 billion for the first nine months of 2003 and 2002, respectively. The increase of $732 million in the 2003 amount is primarily attributable to higher core earnings with higher non-cash charges to income accounting for approximately $100 million of the increase. 19

Occidental's net cash used by investing activities was $1.5 billion and $898 million for the first nine months of 2003 and 2002, respectively. The 2003 amount includes several acquisitions in the Permian Basin totaling $251 million. The 2003 amount also includes advances and capital contributions to equity investees, purchases of equity investee debt and an additional purchase of stock of a cost-method investee, partially offset by equity investment dividends, totaling approximately $108 million, net. The 2002 amount includes the receipt of partial repayments of amounts that were advanced to equity affiliates in prior years. Capital expenditures for the first nine months of 2003 were $1.15 billion, including $836 million for oil and gas and $300 million for chemical. The chemical amount includes $180 million for the purchase of a leased facility in La Porte, Texas and $44 million related to the exercise of purchase options for certain leased assets. Capital expenditures for the first nine months of 2002 were $840 million, including $742 million for oil and gas. Occidental's financing activities used net cash of $425 million and $532 million in the first nine months of 2003 and 2002, respectively. The 2003 amount includes net debt repayments of approximately $298 million. The 2002 amount includes $179 million for the net buyout of the natural gas delivery commitment. Available but unused lines of committed bank credit totaled approximately $1.8 billion at September 30, 2003. In addition, Occidental has $529 million of cash and cash equivalents on the September 30, 2003 balance sheet and its OxyMar subsidiary has a $220 million committed bank revolver which was unused at September 30, 2003. Excluding the purchases of leased assets mentioned above, Occidental currently expects to spend approximately $1.4 billion on its 2003 capital spending program with about 90 percent in the oil and gas segment. In December 2003, Occidental expects to give notice to redeem $454 million in trust preferred securities in January 2004. Occidental expects to have sufficient cash in 2003 from operations to fund its operating needs, capital expenditure requirements, dividend payments and mandatory debt repayments. If needed, Occidental could access existing credit lines. ASSET ACQUISITIONS AND DISPOSITIONS AND OTHER COMMITMENTS In 2003, Occidental made several oil and gas acquisitions in the Permian Basin for approximately $251 million in cash and sold approximately $34 million of these assets shortly thereafter. In April 2003, Occidental exercised its purchase option related to the OxyVinyls, L.P., LaPorte, Texas VCM plant lease for approximately $180 million. In the first quarter of 2003, Occidental exercised purchase options on railcar leases for a total of $44 million. DERIVATIVE ACTIVITIES For the three and nine months ended September 30, 2003, the results of operations included a net pre-tax gain of $15 million and $38 million, respectively, related to derivative mark-to-market adjustments. For the three and nine months ended September 30, 2002, the results of operations included a net pre-tax loss of $4 million and $0.2 million, respectively, related to derivative mark-to-market adjustments. The amount of interest expense recorded in the income statement was lower by approximately $15 million and $41 million for the three and nine months ended September 30, 2003, respectively, to reflect net pre-tax gains from fair-value hedges. The amount of interest expense recorded in the income statement was lower by approximately $11 million and $32 million for the three and nine months ended September 30, 2002, respectively, to reflect net pre-tax gains from fair-value hedges. 20

The following table summarizes after-tax derivative activity recorded in other comprehensive income (OCI) for the nine months ended September 30, 2003 and 2002 (in millions): 2003 2002 ======================================================= ========== ========== Beginning Balance $ (26) $ (20) Losses from changes in current cash flow hedges -- (26) Amount reclassified to income from the expiration of cash flow hedges 6 8 ---------- ---------- Ending Balance $ (20) $ (38) ======================================================= ========== ========== During the next twelve months, Occidental expects that $3 million of net derivative after-tax gains included in OCI, based on their valuation at September 30, 2003, will be reclassified into earnings. Hedge ineffectiveness did not have a significant impact on earnings for the three and nine months ended September 30, 2003 and 2002. ACCOUNTING CHANGES In May 2003, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards (SFAS) No. 150, "Accounting for Certain Financial Instruments with Characteristics of Both Liabilities and Equity." SFAS No. 150 establishes accounting standards for how a company classifies and measures financial instruments that have characteristics of liabilities and equity. Occidental adopted the provisions of this statement on July 1, 2003. As a result of the adoption, Occidental's mandatorily redeemable trust preferred securities are now classified as a liability and the payments to the holders of the securities, which were previously recorded as minority interest on the statement of operations, are recorded as interest expense. In January 2003, the FASB issued FIN 46, "Consolidation of Variable Interest Entities." FIN 46 requires a company to consolidate a variable interest entity (VIE) if it is designated as the primary beneficiary of that entity even if the company does not have a majority of voting interests. A VIE is generally defined as an entity whose equity is unable to finance its activities or whose owners lack the risks and rewards of ownership. The statement also has disclosure requirements for all the VIEs of a company, even if the company is not the primary beneficiary. The provisions of this statement apply at inception for any entity created after January 31, 2003. Occidental adopted the provisions of this Interpretation for its existing entities on April 1, 2003 which resulted in the consolidation of its OxyMar VCM joint venture that was previously accounted for as an equity investment. As a result of the OxyMar consolidation, assets increased by $166 million and liabilities increased by $178 million. There was no material effect on net income as a result of the consolidation. In September 2003, Marubeni indicated it would exercise its option to put its interest in OxyMar to Occidental by paying approximately $25 million to Occidental. In connection with the transfer, which is expected to be complete in April 2004, Occidental will assume Marubeni's guarantee of OxyMar's debt. As all the OxyMar debt is already consolidated in Occidental's financial statements with the adoption of FIN 46, the exercise of the put will not have a material effect on Occidental's financial condition or results of operations. In June 2001, the FASB issued SFAS No. 143, "Accounting for Asset Retirement Obligations." SFAS No. 143 requires companies to recognize the fair value of a liability for an asset retirement obligation in the period in which the liability is incurred if there is a legal obligation to dismantle the asset and reclaim or remediate the property at the end of its useful life. When the liability is initially recorded, the company capitalizes the cost into property, plant and equipment. Over time, the liability is accreted and the cost is depreciated, both over the asset's useful life. Occidental's asset retirement obligations primarily relate to the cost of plugging and abandoning wells, well-site cleanup, facilities abandonment and environmental closure and post-closure care. Occidental adopted SFAS No. 143 in the first quarter of 2003. The initial adoption resulted in an after-tax charge of $50 million, which was recorded as a cumulative effect of a change in accounting principles. The adoption increased net property, plant and equipment by $73 million, 21

increased asset retirement obligations by $151 million and decreased deferred tax liabilities by $28 million. The pro-forma asset retirement obligation, if the adoption of this statement had occurred on January 1, 2002, would have been $131 million at January 1, 2002 and $151 million at December 31, 2002. In April 2003, the FASB issued SFAS No. 149, "Amendment of Statement 133 on Derivative Instruments and Hedging Activities." SFAS No. 149 amends and clarifies financial accounting and reporting for derivative instruments. This statement is effective for contracts entered into or modified after June 30, 2003. Occidental adopted this statement in the third quarter of 2003 and it did not have a material effect on its financial statements. In January 2003, the FASB issued FASB Interpretation No. (FIN) 45, "Guarantor's Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others." FIN 45 requires a company to recognize a liability for the obligations it has undertaken in issuing a guarantee. This liability would be recorded at the inception of a guarantee and would be measured at fair value. FIN 45 also requires certain disclosures related to guarantees, which are included in Note 11. Occidental adopted the measurement provisions of this statement in the first quarter of 2003 and it did not have an effect on the financial statements when adopted. In December 2002, the FASB issued SFAS No. 148, "Accounting for Stock-Based Compensation - Transition and Disclosure." SFAS No. 148 permits two additional transition methods for companies that elect to adopt the fair-value-based method of accounting for stock-based employee compensation. The statement also expands the disclosure requirements for stock-based compensation (See Note 13). The provisions of this statement apply to financial statements for fiscal years ending after December 15, 2002. The statement did not have a material effect on the financial statements when adopted. Since 1999, Occidental has accounted for certain energy-trading contracts in accordance with Emerging Issues Task Force (EITF) Issue No. 98-10, "Accounting for Contracts Involved in Energy Trading and Risk Management Activities." EITF Issue No. 98-10 required that all energy-trading contracts must be marked to fair value with gains and losses included in earnings, whether the contracts were derivatives or not. In October 2002, the EITF rescinded EITF Issue No. 98-10 thus precluding both mark-to-market accounting for all energy-trading contracts that are not derivatives and fair value accounting for inventories purchased from third parties. Also, the rescission requires derivative gains and losses to be presented net on the income statement, whether or not they are physically settled, if the derivative instruments are held for trading purposes. Occidental adopted this accounting change in the first quarter of 2003 and recorded a charge for the cumulative effect of a change in accounting principles of approximately $18 million, after tax. In July 2002, the FASB issued SFAS No. 146, "Accounting for Costs Associated with Exit or Disposal Activities." SFAS No. 146 requires that a liability be recognized for exit and disposal costs only when the liability has been incurred and when it can be measured at fair value. The statement is effective for exit and disposal activities that are initiated after December 31, 2002. Occidental adopted SFAS No. 146 in the first quarter of 2003 and it did not have a material effect on its financial statements. Occidental has classified all of its mineral drilling rights as tangible assets in property, plant and equipment. The FASB and the staff of the Securities and Exchange Commission are considering a possible interpretation of SFAS No. 141, "Business Combinations", paragraph A14.d. (7), under which contract-based mineral rights acquired after June 30, 2001 may have to be classified as intangible assets. Occidental is in the process of determining the effect of this potential change on the financial statements; however, it does not expect the resolution of the issue to materially affect its results of operations. ENVIRONMENTAL MATTERS Occidental's operations in the United States are subject to stringent federal, state and local laws and regulations relating to improving or maintaining the quality of the environment. Foreign operations also are subject to environmental-protection laws. The laws that require or address environmental remediation may 22

apply retroactively to past waste disposal practices and releases. In many cases, the laws apply regardless of fault, legality of the original activities or current ownership or control of sites. Occidental Petroleum Corporation (OPC) or certain of its subsidiaries are currently participating in environmental assessments and remediation activities under these laws at federal Superfund sites and other sites subject to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), comparable state sites and other remediation sites, including Occidental facilities and previously owned sites. The following table presents Occidental's environmental remediation reserves at September 30, 2003, grouped by three categories of environmental remediation sites ($ amounts in millions): # of Sites Reserve =================================== =============== =============== CERCLA & Equivalent Sites 129 $ 241 Active Facilities 14 46 Closed or Sold Facilities 41 56 --------------- --------------- Total 184 $ 343 =================================== =============== =============== In determining the environmental remediation reserves, Occidental refers to currently available information, including relevant past experience, available technology, regulations in effect, the timing of remediation and cost-sharing arrangements. Occidental expects that it will continue to incur additional liabilities beyond those recorded for environmental remediation at these and other sites. The range of reasonably possible loss for existing environmental remediation matters could be up to $400 million beyond the amount accrued. Shown below is additional detail regarding reserves for CERCLA or CERCLA-equivalent proceedings in which OPC or certain of its subsidiaries were involved at September 30, 2003 ($ amounts in millions): Description # of Sites Reserve =================================== =============== =============== Minimal/No Exposure (a) 109 $ 5 Reserves between $1-10 MM 13 52 Reserves over $10 MM 7 184 --------------- --------------- Total 129 $ 241 =================================== =============== =============== (a) Includes 33 sites for which Maxus Energy Corporation has retained the liability and indemnified Occidental, 7 sites where Occidental has denied liability without challenge, 55 sites where Occidental's reserves are less than $50,000 each, and 14 sites where reserves are between $50,000 and $1 million each. Refer to the "Environmental Expenditures" section of Management's Discussion and Analysis of Financial Condition and Results of Operations in the 2002 Form 10-K for additional information regarding Occidental's environmental expenditures. LAWSUITS, CLAIMS, COMMITMENTS, CONTINGENCIES AND RELATED MATTERS OPC and certain of its subsidiaries have been named in a substantial number of lawsuits, claims and other legal proceedings. These actions seek, among other things, compensation for alleged personal injury, breach of contract, property damage, punitive damages, civil penalties or other losses; or injunctive or declaratory relief. OPC and certain of its subsidiaries also have been named in proceedings under CERCLA and similar federal, state and local environmental laws. These environmental proceedings seek funding or performance of remediation and, in some cases, compensation for alleged property damage, punitive damages and civil penalties; however, Occidental is usually one of many companies in these proceedings and has to date been successful in sharing response costs with other financially sound companies. With respect to all such lawsuits, claims and proceedings, including environmental proceedings, Occidental accrues reserves when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. 23

During the course of its operations, Occidental is subject to audit by tax authorities for varying periods in various federal, state, local and foreign tax jurisdictions. Taxable years prior to 1997 are closed for U.S. federal income tax purposes. Taxable years 1997 through 2000 are in various stages of audit by the Internal Revenue Service. Disputes arise during the course of such audits as to facts and matters of law. As mentioned above, Occidental is required under FIN 45 to disclose information relating to guarantees issued by Occidental and outstanding at September 30, 2003. These guarantees encompass performance bonds, letters of credit, indemnities, commitments and other forms of guarantees provided by Occidental to third parties, mainly to provide assurance that Occidental and/or its subsidiaries and affiliates will meet their various obligations. At September 30, 2003, the notional amount of these guarantees was approximately $510 million. Of this amount, approximately $422 million relates to Occidental's guarantee of equity investees' debt and other commitments. The remaining $88 million relates to various indemnities and guarantees provided to third parties. It is impossible at this time to determine the ultimate liabilities that OPC and its subsidiaries may incur resulting from any lawsuits, claims and proceedings, audits, commitments, contingencies and related matters. If these matters were to be ultimately resolved unfavorably at amounts substantially exceeding Occidental's reserves, an outcome not currently anticipated, it is possible that such outcome could have a material adverse effect upon Occidental's consolidated financial position or results of operations. However, after taking into account reserves, management does not expect the ultimate resolution of any of these matters to have a material adverse effect upon Occidental's consolidated financial position or results of operations. SAFE HARBOR STATEMENT REGARDING OUTLOOK AND FORWARD-LOOKING INFORMATION Portions of this report contain forward-looking statements and involve risks and uncertainties that could significantly affect expected results of operations, liquidity, cash flows and business prospects. Factors that could cause results to differ materially include, but are not limited to: global commodity pricing fluctuations; competitive pricing pressures; higher-than-expected costs, including feedstocks; crude oil and natural gas prices; chemical prices; potential liability for remedial actions under existing or future environmental regulations and litigation; potential liability resulting from pending or future litigation; general domestic and international political conditions; potential disruption or interruption of Occidental's production or manufacturing facilities due to accidents, political events or insurgent activity; potential failure to achieve expected production from existing and future oil and gas development projects; the supply/demand considerations for Occidental's products; any general economic recession or slowdown domestically or internationally; regulatory uncertainties; and not successfully completing, or any material delay of, any development of new fields, expansion, capital expenditure, efficiency-improvement project, acquisition or disposition. Forward-looking statements are generally accompanied by words such as "estimate", "project", "predict", "will", "anticipate", "plan", "intend", "believe", "expect" or similar expressions that convey the uncertainty of future events or outcomes. Occidental expressly disclaims any obligation to publicly update or revise any forward-looking statements, whether as a result of new information or otherwise. In light of these risks, uncertainties and assumptions, the forward-looking events discussed might not occur. 24

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK For the period ended September 30, 2003, there were no material changes in the information required to be provided under Item 305 of Regulation S-X included under the caption "Management's Discussion and Analysis of Financial Condition and Results of Operations (Incorporating Item 7A) - Derivative Activities" in Occidental's 2002 Annual Report on Form 10-K. ITEM 4. CONTROLS AND PROCEDURES Occidental's Chief Executive Officer and Chief Financial Officer supervised and participated in Occidental's evaluation of its disclosure controls and procedures as of the end of the period covered by this report. Disclosure controls and procedures are controls and procedures designed to ensure that information required to be disclosed in Occidental's periodic reports filed or submitted under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. Based upon that evaluation, Occidental's Chief Executive Officer and Chief Financial Officer concluded that Occidental's disclosure controls and procedures are effective. There has been no change in Occidental's internal control over financial reporting during the period covered by this report that has materially affected, or is reasonably likely to materially affect, Occidental's internal control over financial reporting. 25

PART II OTHER INFORMATION ITEM 1. LEGAL PROCEEDINGS GENERAL This item incorporates by reference the information regarding lawsuits, claims, commitments, contingencies and related matters in Note 11 to the consolidated condensed financial statements in Part I of this Form 10-Q. ENVIRONMENTAL PROCEEDINGS On October 1, 2003, the Environmental Protection Agency (EPA) served one of Occidental's subsidiaries with an administrative compliance order and an administrative complaint alleging certain violations of environmental laws at the subsidiary's Pottstown, PA facility. The order and complaint do not propose any amount of penalties. However, the EPA implied in public statements that it may seek penalties exceeding $100,000. Occidental's subsidiary disputes many of the EPA's allegations. Occidental does not expect the resolution of this matter to have a material effect on its financial condition or results of operations. ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K (a) Exhibits 11 Statement regarding the computation of earnings per share for the three and nine months ended September 30, 2003 and 2002. 12 Statement regarding the computation of total enterprise ratios of earnings to fixed charges for the nine months ended September 30, 2003 and 2002 and the five years ended December 31, 2002. 31.1 Certification of CEO Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 31.2 Certification of CFO Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 32.1 Certifications of CEO and CFO Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 26

(b) Reports on Form 8-K During the quarter ended September 30, 2003, Occidental filed the following Current Reports on Form 8-K: 1. Current Report on Form 8-K dated July 22, 2003 (date of earliest event reported), filed on July 22, 2003, for the purpose of reporting, under Items 9 and 12, Occidental's results of operations for the second quarter ended June 30, 2003, and speeches and supplemental investor information relating to Occidental's second quarter 2003 earnings announcement. From September 30, 2003 to the date hereof, Occidental filed the following Current Reports on Form 8-K: 1. Current Report on Form 8-K dated October 21, 2003 (date of earliest event reported), filed on October 21, 2003, for the purpose of reporting, under Items 9 and 12, Occidental's results of operations for the third quarter ended September 30, 2003, and speeches and supplemental investor information relating to Occidental's third quarter 2003 earnings announcement. 27

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. OCCIDENTAL PETROLEUM CORPORATION DATE: November 3, 2003 S. P. Dominick, Jr. -------------------------------------------------- S. P. Dominick, Jr., Vice President and Controller (Chief Accounting and Duly Authorized Officer) 28

EXHIBIT INDEX EXHIBITS - -------- 11 Statement regarding the computation of earnings per share for the three and nine months ended September 30, 2003 and 2002. 12 Statement regarding the computation of total enterprise ratios of earnings to fixed charges for the nine months ended September 30, 2003 and 2002 and the five years ended December 31, 2002. 31.1 Certification of CEO Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 31.2 Certification of CFO Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 32.1 Certifications of CEO and CFO Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

                                                                      EXHIBIT 11


                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
                        COMPUTATION OF EARNINGS PER SHARE
         FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2003 AND 2002
                (Amounts in thousands, except per-share amounts)



                                                               Three Months Ended             Nine Months Ended
                                                                     September 30                  September 30
                                                       --------------------------    --------------------------
                                                              2003           2002           2003           2002
- ---------------------------------------------------    -----------    -----------    -----------    -----------
                                                                                        
BASIC EARNINGS PER SHARE
Income after taxes                                     $   445,689    $   476,027    $ 1,213,127    $   840,070
Effect of repurchase of Trust Preferred
     Securities                                                (22)           (41)           (41)           (95)
                                                       -----------    -----------    -----------    -----------
Income from continuing operations                          445,667        475,986      1,213,086        839,975
Discontinued operations, net                                    --        (73,762)            --        (77,690)
Cumulative effect of changes in
     accounting principles, net                                  2             --        (68,428)       (94,973)
                                                       -----------    -----------    -----------    -----------

Earnings applicable to common stock                    $   445,669    $   402,224    $ 1,144,658    $   667,312
                                                       ===========    ===========    ===========    ===========


Basic shares
 Weighted average basic common shares
    outstanding                                            384,109        376,755        381,287        375,671
 Issued, unvested restricted stock                             (95)          (282)           (95)          (282)
 Vested, unissued restricted stock                             330             --            330             --
 Deferred shares                                             1,192            315          1,046            284
                                                       -----------    -----------    -----------    -----------
  Basic shares outstanding                                 385,536        376,788        382,568        375,673
                                                       ===========    ===========    ===========    ===========

Basic earnings per share
 Income from continuing operations                     $      1.16    $      1.26    $      3.17    $      2.23
 Discontinued operations, net                                   --           (.19)            --           (.21)
 Cumulative effect of changes in
      accounting principles, net                                --             --           (.18)          (.25)
                                                       -----------    -----------    -----------    -----------

  Basic earnings per common share                      $      1.16    $      1.07    $      2.99    $      1.77
                                                       ===========    ===========    ===========    ===========

DILUTED EARNINGS PER SHARE

Earnings applicable to common stock                    $   445,669    $   402,224    $ 1,144,658    $   667,312
                                                       ===========    ===========    ===========    ===========


Diluted shares
 Basic shares outstanding                                  385,536        376,788        382,568        375,673
 Dilutive effect of exercise of options outstanding          4,403          2,746          3,585          2,632
 Issued, unvested restricted shares                             95            282             95            282
 Deferred, restricted stock                                  1,096            582            761            194
                                                       -----------    -----------    -----------    -----------

  Diluted shares                                           391,130        380,398        387,009        378,781
                                                       ===========    ===========    ===========    ===========
Diluted earnings per share
 Income from continuing operations                     $      1.14    $      1.25    $      3.14    $      2.22
 Discontinued operations, net                                   --           (.19)            --           (.21)
 Cumulative effect of changes in
    accounting principles, net                                  --             --           (.18)          (.25)
                                                       -----------    -----------    -----------    -----------

  Diluted earnings per common share                    $      1.14    $      1.06    $      2.96    $      1.76
===================================================    ===========    ===========    ===========    ===========

EXHIBIT 11 (continued) OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2003 AND 2002 (Amounts in thousands, except per-share amounts) The following items were not included in the computation of diluted earnings per share because their effect was antidilutive: Three Months Ended Nine Months Ended September 30 September 30 --------------------------------------------- --------------------------------------------- 2003 2002 2003 2002 -------------------- -------------------- -------------------- -------------------- STOCK OPTIONS Number of shares None 23 None 21 Price range per share $27.900 -- $29.438 $29.063-- $29.438 Expiration range 12/01/07 -- 8/29/11 12/01/07-- 4/29/08

                                                                      EXHIBIT 12


                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
       COMPUTATION OF TOTAL ENTERPRISE RATIOS OF EARNINGS TO FIXED CHARGES
                      (Amounts in millions, except ratios)



                                                    Nine Months
                                                          Ended
                                                   September 30                                 Year Ended December 31
                                             ------------------    ---------------------------------------------------
                                                2003       2002       2002       2001       2000       1999       1998
- -----------------------------------------    -------    -------    -------    -------    -------    -------    -------
                                                                                          
Income from continuing
operations (a)                               $ 1,311    $   947    $ 1,548    $ 1,418    $ 1,785    $   699    $   400
                                             -------    -------    -------    -------    -------    -------    -------
Add:
   Provision (credit) for taxes on
      income (other than foreign oil
      and gas taxes)                             522       (151)       (41)       172        871        306        204
   Interest and debt expense (b)                 265        243        309        411        540        515        576
   Portion of lease rentals
      representative of the interest
      factor                                      22         18          6          7          6         31         36
                                             -------    -------    -------    -------    -------    -------    -------
                                                 809        110        274        590      1,417        852        816
                                             -------    -------    -------    -------    -------    -------    -------
Earnings before fixed charges                $ 2,120    $ 1,057    $ 1,822    $ 2,008    $ 3,202    $ 1,551    $ 1,216
                                             =======    =======    =======    =======    =======    =======    =======
Fixed charges
   Interest and debt expense
      including capitalized
      interest (b)                           $   269    $   248    $   321    $   417    $   543    $   522    $   594
   Portion of lease rentals
      representative of the interest
      factor                                      22         18          6          7          6         31         36
                                             -------    -------    -------    -------    -------    -------    -------
   Total fixed charges                       $   291    $   266    $   327    $   424    $   549    $   553    $   630
                                             =======    =======    =======    =======    =======    =======    =======

Ratio of earnings to fixed charges              7.29       3.97       5.57       4.74       5.83       2.80       1.93
- -----------------------------------------    =======    =======    =======    =======    =======    =======    =======

(a)  Includes (1) minority interest in net income of majority-owned subsidiaries
     and partnerships having fixed charges and (2) income from
     less-than-50-percent-owned equity investments adjusted to reflect only
     dividends received.
(b)  Includes proportionate share of interest and debt expense of
     50-percent-owned equity investments.

                                                                    EXHIBIT 31.1


                                  CERTIFICATION
I, Ray R. Irani, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of Occidental Petroleum
     Corporation;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the registrant as of, and for, the periods presented in this report;

4.   The registrant's other certifying officer(s) and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

          (a) Designed such disclosure controls and procedures, or caused such
     disclosure controls and procedures to be designed under our supervision, to
     ensure that material information relating to the registrant, including its
     consolidated subsidiaries, is made known to us by others within those
     entities, particularly during the period in which this report is being
     prepared;

          (b) Evaluated the effectiveness of the registrant's disclosure
     controls and procedures and presented in this report our conclusions about
     the effectiveness of the disclosure controls and procedures, as of the end
     of the period covered by this report based on such evaluation; and

          (c) Disclosed in this report any change in the registrant's internal
     control over financial reporting that occurred during the registrant's most
     recent fiscal quarter (the registrant's fourth fiscal quarter in the case
     of an annual report) that has materially affected, or is reasonably likely
     to materially affect, the registrant's internal control over financial
     reporting; and

5.   The registrant's other certifying officer(s) and I have disclosed, based on
     our most recent evaluation of internal control over financial reporting, to
     the registrant's auditors and the audit committee of the registrant's board
     of directors (or persons performing the equivalent functions):

          (a) All significant deficiencies and material weaknesses in the design
     or operation of internal control over financial reporting which are
     reasonably likely to adversely affect the registrant's ability to record,
     process, summarize and report financial information; and

          (b) Any fraud, whether or not material, that involves management or
     other employees who have a significant role in the registrant's internal
     control over financial reporting.


Date:  November 3, 2003



                                   /s/ Ray R. Irani
                                   ---------------------------------------------
                                   Ray R. Irani
                                   Chairman of the Board of Directors and
                                   Chief Executive Officer

                                                                    EXHIBIT 31.2


                                  CERTIFICATION


I, Stephen I. Chazen, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of Occidental Petroleum
     Corporation;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the registrant as of, and for, the periods presented in this report;

4.   The registrant's other certifying officer(s) and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

          (a) Designed such disclosure controls and procedures, or caused such
     disclosure controls and procedures to be designed under our supervision, to
     ensure that material information relating to the registrant, including its
     consolidated subsidiaries, is made known to us by others within those
     entities, particularly during the period in which this report is being
     prepared;

          (b) Evaluated the effectiveness of the registrant's disclosure
     controls and procedures and presented in this report our conclusions about
     the effectiveness of the disclosure controls and procedures, as of the end
     of the period covered by this report based on such evaluation; and

          (c) Disclosed in this report any change in the registrant's internal
     control over financial reporting that occurred during the registrant's most
     recent fiscal quarter (the registrant's fourth fiscal quarter in the case
     of an annual report) that has materially affected, or is reasonably likely
     to materially affect, the registrant's internal control over financial
     reporting; and

5.   The registrant's other certifying officer(s) and I have disclosed, based on
     our most recent evaluation of internal control over financial reporting, to
     the registrant's auditors and the audit committee of the registrant's board
     of directors (or persons performing the equivalent functions):

          (a) All significant deficiencies and material weaknesses in the design
     or operation of internal control over financial reporting which are
     reasonably likely to adversely affect the registrant's ability to record,
     process, summarize and report financial information; and

          (b) Any fraud, whether or not material, that involves management or
     other employees who have a significant role in the registrant's internal
     control over financial reporting.


Date:  November 3, 2003



                                   /s/ Stephen I. Chazen
                                   ---------------------------------------------
                                   Stephen I. Chazen
                                   Executive Vice President - Corporate
                                   Development and Chief Financial Officer

                                                                    EXHIBIT 32.1


                    CERTIFICATION OF CEO AND CFO PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Occidental Petroleum
Corporation (the "Company") for the quarterly period ending September 30, 2003,
as filed with the Securities and Exchange Commission on November 3, 2003 (the
"Report"), Ray R. Irani, as Chief Executive Officer of the Company, and Stephen
I. Chazen, as Chief Financial Officer of the Company, each hereby certifies,
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

     (1) The Report fully complies with the requirements of Section 13(a) or
     15(d) of the Securities Exchange Act of 1934; and

     (2) The information contained in the Report fairly presents, in all
     material respects, the financial condition and results of operations of the
     Company.


/s/ Ray R. Irani
- -----------------------------------------------------
Name:  Ray R. Irani
Title: Chairman of the Board of Directors and Chief Executive Officer
Date:  November 3, 2003



/s/ Stephen I. Chazen
- -----------------------------------------------------
Name:  Stephen I. Chazen
Title: Executive Vice President - Corporate Development and Chief Financial
       Officer
Date:  November 3, 2003



A signed original of this written statement required by Section 906 has been
provided to Occidental Petroleum Corporation and will be retained by Occidental
Petroleum Corporation and furnished to the Securities and Exchange Commission or
its staff upon request.