EXHIBIT 11.1 LANDSTAR SYSTEM, INC. AND SUBSIDIARY CALCULATION OF EARNINGS PER COMMON SHARE (In thousands, except per share amounts) (Unaudited) Thirteen Weeks Ended --------------------------- March 27, March 28, 1999 1998 --------------------------- Earnings available for earnings per share: Income from continuing operations $ 7,475 $ 4,929 Discontinued operations, net of income taxes (437) ------------ ------------ Net income $ 7,475 $ 4,492 ============ ============ Average number of common shares outstanding 10,368 11,686 ============ ============ Earnings (loss) per common share: Income from continuing operations $ 0.72 $ 0.42 Loss from discontinued operations (0.04) ------------ ------------ Earnings per common share $ 0.72 $ 0.38 ============ ============