UNUM Corporation and Subsidiaries FORM 10-Q SEPTEMBER 30, 1997 EXHIBIT 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Three Months Ended Nine Months Ended September 30, September 30, ------------------ ----------------- (Unaudited - Dollars in millions) 1997 1996 1997 1996 - -------------------------------------------------------------------------------- Earnings: Income before income taxes $131.4 $63.3 $429.5 $272.0 Add: Fixed charges 13.2 12.9 39.2 39.6 - -------------------------------------------------------------------------------- Earnings as adjusted $144.6 $76.2 $468.7 $311.6 ================================================================================ Fixed charges: Interest expense $ 10.4 $ 9.9 $ 31.2 $ 30.6 Interest portion of rent expense 2.8 3.0 8.0 9.0 - -------------------------------------------------------------------------------- Total fixed charges $ 13.2 $12.9 $ 39.2 $ 39.6 ================================================================================ Ratio of earnings to fixed charges 11.0 5.9 12.0 7.9 ================================================================================ For purposes of computing the ratio of earnings to fixed charges, earnings as adjusted consist of income before income taxes and fixed charges. Fixed charges consist of interest expense and the estimated interest portion of rent expense.