J.W.
If he is trying to get out of his parents house it seems like he wants independence. If that is the case I doubt he will fight you on the job requirement. Unless your parents have legal guardianship over him he can move where ever he wants.
I guess I am saying you need to look into what support groups there are for him in your area. They will have a line on job opportunities for guys like him.
One thing I have found with my son is the more responsibility I give him the more responsible he gets. It is almost as if he wants more than anything to prove he will one day be independent. He is 12 by the way and doing just as well independence wise as my "normal" kids did at his age. He is a high functioning Autistic. :)