I understand he doesn't kno how to self-advocate really, since it's hard for Aspies to stick up for themselves or even start a conversation. Can you go with him to HR or the Job Accommodations Network or the like, so that you can speak for him sort of? Or if that is not a possibility because he's supposed to be independent enough, talk the situation through with him and teach him to use a script to talk from. That is what people did with me when I didn't have people to advocate fo rme yet.