UNUM Corporation and Subsidiaries Form 10-Q March 31, 1998 EXHIBIT 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES Three Months Ended March 31, ------------------ (Unaudited - Dollars in millions) 1998 1997 - ------------------------------------------------------------------------- Earnings: Income from continuing operations before income taxes $ 134.4 $ 171.7 Add: Fixed charges 14.2 12.7 - -------------------------------------------------------------------------- Earnings as adjusted $ 148.6 $ 184.4 ========================================================================== Fixed charges: Interest expense $ 11.7 $ 10.2 Interest portion of rent expense 2.5 2.5 - -------------------------------------------------------------------------- Total fixed charges $ 14.2 $ 12.7 ========================================================================== Ratio of earnings to fixed charges 10.5 14.5 ========================================================================== For purposes of computing the ratio of earnings to fixed charges, earnings as adjusted consist of income from continuing operations before income taxes and fixed charges. Fixed charges consist of interest expense and the estimated interest portion of rent expense.