You have two options:First, you can contact your state or the federal department of labor; they enforce the labor laws, including failure to pay wages or overtime required under the Fair Labor Standards Act (FLSA) or similar state laws, and may be able to help your husband get the money to which he is entitled. Even if they can't help, asking for their help is free, so it's a good place to start. Second, you could sue. When somone works, they work pursuant, or as per, an agreement, even if only an oral or unwritten one, that they will be paid in exchange for working. If the employee performs the work but the employer does not pay him, that is a violation of that agreement; therefore, the employer could be sue for "breach of contract" for the money.