Founded in 1961, RLI Insurance Company s principal activity is to underwrite selected property and casualty insurance products through its subsidiaries, including RLI Special Risk, Mt. Hawley Insurance Company and RLI Indemnity Company. Its commercial property coverage insurance includes earthquake, wind, flood and collapse coverage and marine division. It underwrites coverage for a wide range of commercial and industrial risks for office buildings, apartments, condominiums, industrial and mercantile structures and movable equipment. RLI Special Risk handles insurance for various risks, such as excess workers compensation, associations, professional liability groups, profit and nonprofit directors' and officers' liability and medical malpractice. Headquartered in Peoria, Ill., RLI Insurance Company also maintains a branch office in Chicago.