Many workers on the construction site didn't sign the contract, and our wages were also in arrears. What can be done?

Call the local legal aid hotline 12345. If you don't know, you can go to the local government affairs center to ask. First, you can get free legal aid; Second, you can directly complain about your workplace; Third and most importantly, the more workers, the better. Go to the Home Affairs Bureau to complain once. Seek free legal advice while complaining, and the lawyer will tell you how to deal with the problem. If it is good, it will be solved in about 20 days. If it's not good, as I said before, the government bureau can just complain. The complaint is basically about 20 days. I will send a text message to ask if it has been resolved. At this time, if it is not solved, you can directly reply to the bad reviews, and where is the difference? This is an assessment. Have an impact on them. Continue to complain after replying. Repeat the previous operation.