Exhibit 11.1 PAYLESS SHOESOURCE, INC. COMPUTATION OF NET EARNINGS PER SHARE May 4, May 5, (Thousands, except per share) 2002 2001 -------- -------- Basic Computation: - ------------------ Net earnings $ 23,933 $ 29,650 Weighted average common shares outstanding 22,414 22,164 -------- -------- Basic earnings per share $ 1.07 $ 1.34 ======== ======== Diluted Computation: - -------------------- Net earnings $ 23,933 $ 29,650 Weighted average common shares outstanding 22,414 22,164 Net effect of dilutive stock options based on the treasury stock method 378 631 -------- -------- Outstanding shares for diluted earnings per share 22,792 22,795 ======== ======== Diluted earnings per share $ 1.05 $ 1.30 ======== ======== Note: Basic earnings per share are computed by dividing net earnings by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share include the effect of conversions of options.