Liquor liability insurance is business coverage that protects your business against loss or damages claimed as a result of a patron of your business becoming intoxicated and injuring himself or others. If your business manufactures, sells, serves or facilitates the use or purchase of alcohol, then your business will likely need this coverage. Liquor liability coverage may be sold as an add-on to a commercial liability policy or as a stand-alone policy. But, if you do not purchase this extra coverage, your standard commercial general liability policy does not protect your business against liquor-related claims.