1 Exhibit 11 Ohio Casualty Corporation and Subsidiaries Computation of Earnings Per Share on Primary and Fully Diluted Basis for the years ended December 31, 1996, 1995 and 1994 1996 1995 1994 ---- ---- ---- Net income applicable to common stock (in thousands) $102,457 $99,735 $96,891 ======== ======= ======= Average common shares outstanding (shares in thousands) 35,247 35,750 36,033 Average number of common shares issuable upon exercise of stock options, less common shares assumed to have been repurchased with the proceeds from the assumed exercise of outstanding stock options. Number of shares repurchased is based on the average market price during year. 3 17 0 -------- ------- ------- 35,250 35,767 36,033 ======== ======= ======= Net income per average share on a primary basis $ 2.91 $ 2.79 $ 2.69 ======== ======= ======= Average common shares outstanding (shares in thousands) 35,247 35,750 36,033 Average number of common shares issuable upon exercise of stock options, less common shares assumed to have been repurchased with the proceeds from the assumed exercise of outstanding stock options. Number of shares repurchased is based on higher of average market price during the year, or market price at end of year. 8 17 5 -------- ------- ------- 35,255 35,767 36,038 ======== ======= ======= Net income per average share on a fully diluted basis $ 2.91 $ 2.79 $ 2.69 ======== ======= ======= 31