Foreign workers

I heard that there is going to be a worker id card. If an employer hires someone who is an illegal, they then will be fined. I dont' think this will work since what is to stop people from getting fake cards like they do now?

One thing is I think foreign workers should have a contract. They should say this is how much money they are going to get paid per week. Alot of the foreign kids would work eighty hours a week. Also that way the foreign workers would know how much they would get paid.