EXHIBIT 12 OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES COMPUTATION OF TOTAL ENTERPRISE RATIOS OF EARNINGS TO FIXED CHARGES FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996 AND THE FIVE YEARS ENDED DECEMBER 31, 1996 (Amounts in millions, except ratios) Nine Months Ended September 30 Year Ended December 31 ----------------------- ------------------------------------------------------------ 1997 1996 1996 1995 1994 1993 1992 - -------------------------------------- --------- --------- --------- --------- --------- --------- --------- Income(loss) from continuing operations(a) $ 500 $ 525 $ 672 $ 478 $ (46) $ 80 $ 131 --------- --------- --------- --------- --------- --------- --------- Add: Provision for taxes on income (other than foreign oil and gas taxes) 205 169 212 244 50 204 114 Interest and debt expense(b) 335 384 494 592 594 601 666 Portion of lease rentals representative of the interest factor 34 32 43 48 55 53 56 Preferred dividends to minority stockholders of subsidiaries(c) -- -- -- -- -- -- 7 --------- --------- --------- --------- --------- --------- --------- 574 585 749 884 699 858 843 --------- --------- --------- --------- --------- --------- --------- Earnings(loss) before fixed charges $ 1,074 $ 1,110 $ 1,421 $ 1,362 $ 653 $ 938 $ 974 ========= ========= ========= ========= ========= ========= ========= Fixed charges Interest and debt expense including capitalized interest(b) $ 347 $ 391 $ 506 $ 602 $ 599 $ 612 $ 685 Portion of lease rentals representative of the interest factor 34 32 43 48 55 53 56 Preferred dividends to minority stockholders of subsidiaries(c) -- -- -- -- -- -- 7 --------- --------- --------- --------- --------- --------- --------- Total fixed charges $ 381 $ 423 $ 549 $ 650 $ 654 $ 665 $ 748 ========= ========= ========= ========= ========= ========= ========= Ratio of earnings to fixed charges 2.82 2.62 2.59 2.10 n/a(d) 1.41 1.30 - ------------------------------------- ========= ========= ========= ========= ========= ========= ========= (a) Includes (1) minority interest in net income of majority-owned subsidiaries 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. (c) Adjusted to a pretax basis. (d) Not computed due to less than one-to-one coverage. Earnings were inadequate to cover fixed charges by $1 million.