If you get paid less than minimum wage, or your employer is breaking other wage/hour laws, you can file a complaint. The agencies that enforce minimum wage laws can help you get the wages you earned.
If you work in Massachusetts, you can contact the Fair Labor Division of the Office of the Massachusetts Attorney General. Call (617) 727-3465.
If you are a state or local government worker, you can contact the Wage and Hour Division of the U.S. Department of Labor. Call 1-866-487-9243.
Download the Complaint Form from the Attorney General's website.