The reckless, the accident-prone, or the just plain apprehensive take heed: Harleysville Group hopes to extend a safety net to all of you. Insurance holding company Harleysville Group (also known as Harleysville Insurance) sells a broad line of commercial property/casualty insurance policies, including auto, commercial multi-peril, and workers' compensation policies. It also sells personal auto and homeowners coverage with specialty products focused on human services and inland marine. The company maintains offices in about a dozen states and markets its products in about 30 eastern and midwestern states through some 1,300 independent agencies. Harleysville Group is a subsidiary of Nationwide Mutual Insurance.