Can an employer who is also your landlord force you to work for free or evict you?

I live in FL and my boyfriend and I were on the verge of being homeless when the owner of the hotel we were staying at offered him the room in exchange for work. Without thinking he agreed. They make him work about 9-10 hours a day, 7 days a week. He has not had a day off in almost 3 years. The only compensation he receives is a small room and 1 meal just for him, a day. If he were to take a day off to look for another job they said he has to pay $60 for the room that day. No work, no room. I am disabled and unable to work at the moment. He's a hard worker and would actually be making a decent living if he was being paid for his work, not to mention the overtime he's put in for free. It's almost like he's working as slave labor. They shouldn't be able to make him choose between working for free and sleeping on the street. Does he have a case?