1 Exhibit 11.1 THE CHUBB CORPORATION COMPUTATION OF EARNINGS PER SHARE THREE MONTHS ENDED MARCH 31 1997 1996 ------- ------- (in millions) Net income .......................................... $ 192.1 $ 151.4 After-tax interest expense on 6% guaranteed exchangeable subordinated notes .................... 2.2 2.4 ------- ------- Net income for computing earnings per share ......... $ 194.3 $ 153.8 ======= ======= Weighted average number of common shares outstanding ........................................ 173.5 174.7 Additional shares from assumed conversion of 6% guaranteed exchangeable subordinated notes as if each $1,000 of principal amount had been converted at issuance into 23.256 shares of common stock .................................... 5.3 5.8 ------- ------- Weighted average number of common and common equivalent shares assumed outstanding for computing earnings per share ...................... 178.8 180.5 ======= ======= Net income per share ................................ $ 1.09 $ .85