The Hanover Insurance Group, Inc. is a holding company. The Company's primary business operations are property and casualty insurance products and services. The Company operates through four segments: Commercial Lines, Personal Lines, Chaucer and Other. The Company's Commercial Lines product suite provides agents and customers with products designed for small, middle and specialized markets. The Company's Personal automobile coverage insures individuals against losses incurred from personal bodily injury, bodily injury to third parties, property damage to an insured's vehicle, and property damage to other vehicles and other property. The Company's Chaucer segment consists of international business written through Lloyd's, and includes Marine and aviation includes worldwide direct, facultative and treaty business. The Company's Other segment consists of Opus Investment Management, Inc., which provides investment advisory services.