The Hanover Insurance Group, Inc., through its subsidiaries, underwrites commercial and personal property, and casualty insurance coverage in the United States. It operates in four segments: Commercial Lines, Personal Lines, Chaucer, and Other Property and Casualty. The Commercial Lines segment provides commercial multiple peril; commercial automobile; workers' compensation; and other commercial coverages, including AIX program business, inland marine, and surety, as well as management and professional liability, specialty property, healthcare, umbrella and monoline general liability, and fire. The Personal Lines segment offers personal automobile and homeowners, as well as other personal lines, such as personal inland marine, umbrella, fire, personal watercraft, earthquake, and other miscellaneous coverages. The Chaucer segment provides marine and aviation, energy, property, and motor, as well as casualty and other coverages, which include liability coverage for professional and commercial risks, crime and professional liability coverage for financial institutions, medical malpractice, and workers' compensation. The Other Property and Casualty segment provides investment advisory services; and manages assets for unaffiliated institutions, such as insurance companies, retirement plans, and foundations. The company sells its products and services through a network of independent agents and insurance brokers, as well as through comparative Website aggregators. The Hanover Insurance Group, Inc. was founded in 1852 and is headquartered in Worcester, Massachusetts.