The Hanover Insurance Group, Inc. is a holding company. The Company is engaged in providing property and casualty insurance products and services. The Company has four segments: Commercial Lines, Personal Lines, Chaucer and Other. It markets its domestic products and services through independent agents and brokers in the United States, and conducts business internationally through a subsidiary, Chaucer Holdings Limited, which operates through the Society and Corporation of Lloyd's (Lloyd's). Its Commercial Lines product suite provides agents and customers with products designed for small, middle and specialized markets. Its Personal Lines coverages include other personal lines, which consist of umbrella and fire, among others. The Chaucer segment consists of international business written through Lloyd's, including marine and aviation, and property. The Other segment consists of Opus Investment Management, Inc. (Opus), which provides investment advisory services to affiliates.