What actually happens is that some people always show up. When they find out how much they are expected to do for peanuts, they quit.
Here in Miami, Old Folks' homes, which are exempt from minimum wage laws of any sort, pay $50 per day, and by per day, I mean 24 hours in residence. People are expected to live in for six days and get one day off. Most people doing this are illegals, who find it tolerable because they do not have to pay rent.
If anything happens to any old person, they get the blame and get fired.