Donegal Group Inc., an insurance holding company, provides commercial and personal lines of property and casualty coverages. It operates through three segments: Investment Function, Commercial Lines of Insurance, and Personal Lines of Insurance. The company offers protection against liability for bodily injury and property damage arising from automobile accidents and protection against loss from damage to automobiles owned by the insured for commercial automobile; protection to businesses against perils combining liability and physical damage coverages; and benefits to employees for injuries sustained during employment.