OLDWICK, N.J.--(BUSINESS WIRE)--A.M. Best has affirmed the financial strength rating of A+ (Superior) and the issuer credit ratings (ICR) of “aa” of the following members of the RLI Group (RLI): RLI Insurance Company and its affiliates, Contractors Bonding and Insurance Company (CBIC) and Mt. Hawley Insurance Company (Mt. Hawley).The ratings of the final member of the group, RLI Indemnity Company, Mt. Hawley’s reinsured affiliate, remains under review with negative implications due to its pendi