Exhibit 12 EXHIBIT 12 UNUM CORPORATION AND SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Dollars in millions) Year Ended December 31, --------------------------------- 1997 1996 1995 - ------------------------------------------------------------------------------- Earnings: Income before income taxes $536.4 $341.6 $381.9 Add: Fixed charges 53.4 52.2 48.0 ------- -------- -------- Earnings as adjusted $589.8 $393.8 $429.9 =============================================================================== Fixed charges: Interest expense $ 42.4 $ 40.7 $ 37.2 Interest portion of rent expense 11.0 11.5 10.8 -------- ---- ------- Total fixed charges $ 53.4 $ 52.2 $ 48.0 =============================================================================== Ratio of earnings to fixed charges 11.0 7.5 9.0 =============================================================================== For purposes of computing the ratio of earnings to fixed charges, earnings as adjusted consist of income before income taxes plus fixed charges. Fixed charges consist of interest expense and the estimated interest portion of rent expense.