Exhibit 99(a) CNF TRANSPORTATION INC. COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (Dollars in thousands) Nine Months Ended September 30, 1999 1998 Fixed Charges: Interest Expense $ 21,300 $ 25,135 Capitalized Interest 3,887 1,585 Dividend Requirement on Series B Preferred Stock [1] 8,257 8,374 Interest Component of Rental Expense [2] 38,207 28,977 $ 71,651 $ 64,071 Earnings: Income before Taxes $ 239,406 $ 187,837 Fixed Charges 71,651 64,071 Capitalized Interest (3,887) (1,585) Preferred Dividend Requirements [3] (8,257) (8,374) $ 298,913 $ 241,949 Ratio of Earnings to Fixed Charges: 4.2 x 3.8 x [1] Dividends on shares of the Series B cumulative convertible preferred stock are used to pay debt service on notes issued by the Company's Thrift and Stock Plan. [2] Estimate of the interest portion of lease payments. [3] Preferred stock dividend requirements included in fixed charges but not deducted in the determination of Income before Taxes.