What is a social worker? What do they do? My Grandad just told me to talk to my social worker about something, and he was really surprised when I said I didn't have one. I daren't ask him about them, even tho he probably will know something (he was a psychiatric nurse for ages before he retired), because I really don't want to admit how dumb I am. I guess if I knew what one was, I'd understand why my grandad expected m to have one.