EXHIBIT 11.1 LANDSTAR SYSTEM, INC. AND SUBSIDIARY CALCULATION OF EARNINGS PER COMMON SHARE (In thousands, except per share amounts) (Unaudited) Twenty-Six Thirteen Weeks Ended Weeks Ended --------------------------- --------------------------- June 30, June 24, June 30, June 24, 2001 2000 2001 2000 ------------ ------------- ------------- ----------- Earnings available for earnings per share: Net income $ 19,287 $ 17,776 $ 10,933 $ 9,437 ============ ============ ============ ============ Average number of common shares outstanding 8,503 9,024 8,494 8,880 ============ ============ ============ ============ Earnings per common share $ 2.27 $ 1.97 $ 1.29 $ 1.06 ============ ============ ============ ============ 20