The lawyer answered you responsibly: the labor contract law provides that more than one month of employment, less than one year without signing a contract with the workers, every month to pay double wages to the workers. It also stipulates that laborers must be paid overtime wages for overtime work. It also stipulates that no deposit can be collected from workers. According to these regulations, this restaurant is in serious violation of labor and contract law. You can ask the boss to pay you double wages on the grounds that he has not signed a labor contract with you, and if he does not agree, you can apply to the local labor arbitration committee for arbitration, demanding double wages and overtime wages. Will certainly support your request.