Persons and businesses licensed to provide professional services are required to meet the standards of care in their profession whether it be accounting, law, medicine or another profession. It is usually necessary to employ an expert to testify that the person or business being sued breached the duty of care and that the breach of duty caused significant injury. The employment of experts is expensive. When the injury caused by professional negligence is not serious then it is not likely the professional negligence claim well be economically feasible.