I applied for a driver's license, but the other party asked me to pay a 500 violation deposit. Is this trustworthy?

It is understandable that as a company, you will also be worried about problems with your employees, but it is illegal to collect deposits. As long as it is a formal unit, has a license, and is legal, then you can go and it will not be returned to you after one month. Just go to the Labor Supervision Bureau to file a complaint, or apply for arbitration at the Labor Arbitration Bureau. You can even ask for insurance and so on.