You may get some relief if this is an "OSHA" violation. Congress passed the Occupational and Safety Health Act to ensure worker and workplace safety. The goal is to make sure employers provide their workers a place of employment free from recognized hazards to safety and health, such as exposure to toxic chemicals, excessive noise levels, mechanical dangers, heat or cold stress, or unsanitary conditions. Proper lighting would most likely be included. Since OSHA is federal it applies equally in all states. Additionally, there may be state and/or local building and/or fire code regulations that provide for more lighting.Your husband should contact the NC Attorney General's office of your state's department of labor for more specific information as to how best to handle this matter.