While the professional liability covers you for the rendering or failure to render professional services, commercial general liability is extended to cover claims for bodily injury, personal injury and property damage to others for which you are legally liable. Commercial General Liability insurance provides protection for family mediators for non professional liability exposures associated with serving clients. For example, the liability for clients falling and being injured on your premises or in your office. Commercial General Liability also extends to include such coverage as libel, slander, wrongful eviction and defamation.