EXHIBIT 11 BOISE CASCADE OFFICE PRODUCTS CORPORATION COMPUTATION OF PER SHARE EARNINGS (in thousands, except share information) For the Three Months For the Nine Months Ended September 30 Ended September 30 1998 1997 1998 1997 BASIC EARNINGS PER SHARE Net income $ 11,827 $ 12,532 $ 43,144 $ 39,153 Shares of Common Stock: Weighted average shares outstanding 65,757,737 63,086,894 65,700,493 62,951,608 Effect of contingent shares 27,836 430,207 25,147 447,267 __________ __________ __________ __________ 65,785,573 63,517,101 65,725,640 63,398,875 Basic earnings per share (1) $ .18 $ .20 $ .66 $ .62 DILUTED EARNINGS PER SHARE Net income $ 11,827 $ 12,532 $ 43,144 $ 39,153 Shares of Common Stock: Weighted average shares outstanding 65,757,737 63,086,894 65,700,493 62,951,608 Effect of options 27,258 123,285 67,025 122,620 Effect of contingent shares 27,836 430,207 25,147 447,267 __________ __________ __________ __________ 65,812,831 63,640,386 65,792,665 63,521,495 Diluted earnings per share (1) $ .18 $ .20 $ .66 $ .62 (1) In 1997, we adopted Statement of Financial Accounting Standards No. 128 (SFAS 128), "Earnings Per Share." Earnings per share for 1997 have been restated to reflect SFAS 128. The impact of the adoption was to reduce basic earnings per share by $.01.