What is in the contracts for the waivered visa workers?

I still think this may be yuuuge. He has applied for 78 recently but also has brought over a lot more over the years. What is in their contract? Do they have to pay for transportation or other associated costs? The trump org. could charge them with interest if so. Are there clauses if they don't make it the entire time they have to pay back any costs? Fire them 2 days before for some bogus reason that they can say they did not fulfill their obligations. Just from the way he does business I have the feeling he may have a worse record paying them then he does with the U.S. citizens he had do work for him. He would know it would be very difficult for any of them to get any money back and probably count it as a loss knowing they would not be able to keep up with a law suite.