Exhibit 21.1 Subsidiaries of the Registrant The following companies are subsidiaries of the Registrant as of December 31, 1996. Jurisdiction of Percentage Name Incorporation Ownership - ---- --------------- ---------- RLI Insurance Company Illinois 100% RLI Aviation, Inc. Illinois 100% Replacement Lens Inc. Illinois 100% Maui Jim, Inc. Illinois 34% Mt. Hawley Insurance Company Kansas 99.5% License Express Services, Inc. Illinois 100% RLI Insurance Ltd. Bermuda 100% RLI Insurance Agency Ltd. Canada 100% 37