While ASD individuals may be on the receiving end of bullying, we also can have trouble with social cues and subtle distinctions. The co-worker may not understand the difference between "friendly teasing" and their actions, because the same words in different tones or situations can change from appropriate to not. What OP sees as insults and bullying might be what the coworker thinks is "just kidding around between friends" not understanding the relationship as OP perceives it, or the lack of professionalism involved. If there is an ASD in play, simply explaining these things should put an end to the behavior and get a sincere apology. Misreading social cues and hurting someone unintentionally is one of the things I've talked about with other spectrum dwellers and we feel horrible about it. The longer it goes on without someone saying something, the worse we feel, because it becomes a situation where we think "I shouldn't have had to have been told". That isn't the case, it's like a color blind person feeling like it's their fault they couldn't distinguish between two paint shades that weren't labeled. If we're not told, we don't have another way to gain that information. Just because people use AS as an excuse to be an ass doesn't mean that some behaviors that seem assholish can't legitimatly have Aspergers as a contributing factor. The difference is, generally, a genuine Aspergers individual will apologise, cite the condition as a possible cause, and then say they'll try to do better. Someone claiming AS as an excuse to be an asshole will say "It's not my fault I have Aspergers you jerk!" And continue the offending action.

Too true - I know I've accidentally upset at least one person with what was meant as friendly teasing. What I meant was that we don't tend to do it deliberately - though we are also vulnerable to people using our social difficulties to falsely accuse us of bullying.