1 EXHIBIT 11 COMPUTATION OF PER SHARE EARNINGS COMPLETE BUSINESS SOLUTIONS, INC. AND SUBSIDIARIES PRO FORMA OR ACTUAL NET INCOME PER COMMON SHARE (IN THOUSANDS, EXCEPT PER SHARE DATA) (UNAUDITED) THREE MONTHS ENDED MARCH 31, ------------------ 2000 1999 ------ ------- Weighted average number of shares of Common stock outstanding.................................................. 37,781 36,363 Common Stock equivalents calculated using the weighted average stock price per share for the periods presented...... 1,282 1,593 ------ ------ Weighted average shares outstanding............................ 39,063 37,956 ====== ====== Net income..................................................... 5,011 10,235 ====== ====== Net income per common share.................................... 0.13 0.27 ====== ======