Seriously?? Lawsuit??
Since the employee is in Florida, they could essentially get rid of him for sneezing funny, so he'd have absolutely zero traction for a suit.
I know you keep harping on the legality of the situation, but most everyone working any kind of job is likely doing something at their place of employment that violates some obscure labor law. I suppose it's up to the individual employee whether or not to make a gigantic case about it, but if they did they would need to understand the reality that they'll have a real tough time holding on to employment.
OP, I still say that you should let him try it out for a while. His education should absolutely come first, but the fact that he wants to "man up" in this way is a really GOOD thing.