EXHIBIT 11.1 LANDSTAR SYSTEM, INC. AND SUBSIDIARY CALCULATION OF EARNINGS PER COMMON SHARE (In thousands, except per share amounts) (Unaudited) Thirty Nine Thirteen Weeks Ended Weeks Ended --------------------------- --------------------------- Sept 23, Sept 25, Sept 23, Sept 25, 2000 1999 2000 1999 ------------ ------------- ------------- ----------- Earnings available for earnings per share: Net income $ 29,292 $ 30,304 $ 11,516 $ 12,074 ============ ============ ============ ============ Average number of common shares outstanding 8,909 10,149 8,677 9,954 ============ ============ ============ ============ Earnings per common share $ 3.29 $ 2.99 $ 1.33 $ 1.21 ============ ============ ============ ============ 22