1 EXHIBIT 11 COMPUTATION OF PER SHARE EARNINGS COMPLETE BUSINESS SOLUTIONS, INC. AND SUBSIDIARIES PRO FORMA OR ACTUAL NET INCOME PER COMMON SHARE (UNAUDITED) Three Months Ended June 30, ---------------------- 2000 1999 -------- -------- Weighted average number of shares of Common Stock outstanding........... 36,423 37,505 Common Stock equivalents calculated using the weighted average stock price per share for the periods presented.......................... -- 802 -------- -------- Weighted average shares outstanding..................................... 36,423 38,307 ======== ======== Actual net income (loss) available for common shareholders.............. $(26,225) $ 7,261 ======== ======== Actual basic earnings per common share.................................. $ (.72) $ .19 ======== ======== Actual fully diluted earnings per common share.......................... $ (.72) $ .19 ======== ======== Six Months Ended June 30, ---------------------- 2000 1999 -------- -------- Weighted average number of shares of Common Stock outstanding........... 37,379 36,950 Common Stock equivalents calculated using the weighted average stock price per share for the periods presented.......................... -- 1,171 -------- -------- Weighted average shares outstanding..................................... 37,379 38,121 ======== ======== Actual net income (loss) available for common shareholders.............. $(21,214) $ 17,496 ======== ======== Actual basic earnings per common share.................................. $ (.57) $ .47 ======== ======== Actual fully diluted earnings per common share.......................... $ (.57) $ .46 ======== ========