His comments were illegal, as they actually constitute a hate crime, so he could have been reported to the police at the time - hate crime has to be perceived by the person on the receiving end as a hate crime for it to be upheld, so the worker could have reported it, and I am surprised they didn't
I am registered disabled myself, and am shocked by the attitude shown to disabled people - I work full time, but am a blue badge holder, and have heard comments such as I must be a scrounger because I look physically OK, its hard to keep my mouth shut sometimes especially when Im on duty !