I've read a small handful of not-yet-reprinted Johnny Thunder stories, but nowhere near the majority, so I ask:
Did Johnny Thunder have a job?
My impression is that though he's seen working in his debut story, most of the time he's just bopping around fighting crimes, with no visible means of support. I don't think his Silver Age appearances mention a job either.
Given that most union-suit superheroes still had to work for a living, this seems an odd omission for DC's resident dunderhead.