EXHIBIT 11 TO FORM 10-K ROBERT HALF INTERNATIONAL INC. AND SUBSIDIARIES COMPUTATION OF PER SHARE EARNINGS (in thousands, except per share amounts) YEARS ENDED DECEMBER 31, 1993 1992 1991 ---- ---- ---- NET INCOME $11,723 $ 4,382 $ 4,115 ------- ------- ------- ------- ------- ------- WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING Primary: Common stock- 12,155 11,742 11,427 Common stock equivalents - stock options (A) 391 223 176 ------- ------- ------- Primary shares outstanding 12,546 11,965 11,603 ------- ------- ------- ------- ------- ------- Fully Diluted: Common stock 12,155 11,742 11,427 Common stock equivalents - stock options (A) 475 261 210 ------- ------- ------- Fully diluted shares outstanding 12,630 12,003 11,637 ------- ------- ------- ------- ------- ------- NET INCOME PER SHARE: Primary $ .93 $ .37 $ .35 Fully diluted $ .93 $ .37 $ .35 <FN> (A) The treasury stock method was used to determine the weighted average number of shares of common stock equivalents outstanding during the periods.