if, and i say if he has any sort of development issues closely to that of a mental retardation, most likely he does have some sort of social worker type of help, and they in fact helped him get that job. ever see some of the workers in supermarkets..??
down syndrome types...??
they have a support staff, that helps them get training for jobs......
that's only one of many agencies that help, and our tax dollars pay for.
ask him outright, if he belongs to some sort of group home, or social services organization, and if so, contact them, and let them know what's going on..they are experts on calming down