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. 26, Sept. 27, Sept. 26, Sept. 27, 1998 1997 1998 1997 --------------------------- --------------------------- Earnings available for earnings per share: Income from continuing operations $ 23,155 $ 17,412 $ 9,239 $ 8,303 Discontinued operations, net of income taxes (22,589) (402) (738) ------------ ------------ ------------ ------------ Net income $ 566 $ 17,010 $ 9,239 $ 7,565 ============ ============ ============ ============ Average number of common shares outstanding 11,223 12,636 10,743 12,565 ============ ============ ============ ============ Earnings (loss) per common share: Income from continuing operations $ 2.06 $ 1.38 $ 0.86 $ 0.66 Loss from discontinued operations (2.01) (0.03) (0.06) ------------ ------------ ------------ ------------ Earnings per common share $ 0.05 $ 1.35 $ 0.86 $ 0.60 ============ ============ ============ ============