Not only can't he work any job he wants, he can't work any job who wants him. Many jobs have restrictions on prior convictions. Most of the employment contracts I have signed have "morality clauses". I can be fired not only for committing a crime, but for doing anything the local community (as interpreted by the Board of Directors and CEO) might find "inappropriate" even if it is completely LEGAL.
This is, of course, why I don't (and will never) post my real name or personal info on a porn forum.
Never mind all of that, everybody seems to be twisting around the original question to a very weird extreme.
The original question was would you WANT Michael Vick on your team? Not should an animal torturer be allowed to get a job and second chance after his sentence is over?
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--Some of us look for The Way in opium and some in God, some of us in whiskey and some in love. It is all the same Way and it leads nowhither.