The Hanover Insurance Group, Inc., through its subsidiaries, provides various property and casualty insurance products and services in the United States. The company operates through three segments: Commercial Lines, Personal Lines, and Other. The Commercial Lines segment offers commercial multiple peril, commercial automobile, and workers' compensation insurance products, as well as management and professional liability, marine, specialty industrial and commercial property, monoline general liability, surety, umbrella, fidelity, crime, and other commercial coverages.