It raises an even bigger question to me, which is what are we supposed to do with these people at all then? I can perfectly well understand why no employer will want to take a chance on them, but if nobody employs them, then they're on the street with no choice but to commit crime for money or die as a beggar.
Individually rational decisions add up to failure for society as a whole.
I think exactly the same thing every time I hear about a kid being expelled from a school. Legally, they have to go to school somewhere. What good does it do to make them someone else's problem? It's like those idiot cities that round up all their homeless and bus them to other cities.
Hell, take the homeless. We see calls all the time to push them away, raze all the tent cities, put spikes on benches and arrest people for sleeping on sidewalks. Why? Unless we're going to kill all homeless people, they have to live somewhere, don't they? What are they supposed to do?