When I used to go to the "crappy" Wal-Mart (aren't they all?) there was a guy there with obvious mental disabilities. Actually I bet it was more like brain damage. He was exceedingly friendly, you could tell he had routines for his job (which he did well) and was enthusiastic about his job. The Onion puts it better:
http://www.theonion.com/articles/developmentally-disabled-burger-king-employee-only,462/
This, but totally opposite. That is how Chris was at Wendy's. The usual Chris bullshit combined with HARD WORK like mopping, cleaning, etc. Even before the twolls he was probably an impossible, shitty employee who brought up his Autism every second of the day to escape doing certain tasks. I can just imagine Bob, sitting in his ever more cluttered house watching his son come home and say he was fired then deciding the best thing to do is to just get the tugboat for him.
Chris would be hard pressed to find gainful employment at any retail or food establishment, even in a janitorial role. Besides the obvious IGNORE ALL GOOGLE RESULTS he would slack as much as he could, scare customers, smell foul, accuse customers of being twolls if they said something wrong to him, his inability to actually get things done in a timely manner and, of course, he would bring up his "disability" anytime he was assigned something he didn't want to do.
He would do better by doing things like collecting cans or something that's all about being a self-starter but that would be HARD WORK.