What's the actual problem behavior or performance issue specifically? I find it hard to believe that there is some law that says you have to keep employing a pe

What's the actual problem behavior or performance issue specifically? I find it hard to believe that there is some law that says you have to keep employing a person who is incompetent at there job just because they have a disability. If you fire him because he is autistic, then he can sue you successfully. If you can point to a specific problem with his performance related to communication or anything else, then I don't think he will be able to make a case if you fire him. I'm not a lawyer but that just seems logical. I would assume that if you write or say anything about the autism at work, then you are looking at a discrimination lawsuit. If you make an official record of unacceptable behavior or performance without referencing it, then you shouldn't have a problem.