I used to work at TG&Y which sold guns, and covered in the sporting goods dept from time to time. Does that count??? No??? Ok then fine. I'm the Range Manager at Henry's.
For some reason, I don't think I'd do well working in any of those places. I'm pretty sure that I'd "encounter" too many individuals that I felt "shouldn't own a firearm/shouldn't be allow to shoot a firearm" and would be likely to tell them so. Thus, I probably wouldn't be working there very long, nor would I make any friends in the above mentioned categories.
Besides, there's enough people I read on the OSA forums that I question whether they should own firearms. (No names will be disclosed.)