My aunt is a nurse practitioner, and is responsible for overseeing a lot of nurses where she works. Anyone that shows up with a tongue ring or a piece of metal sticking out of their nose or lips gets sent home. My aunt got the hospital to get a professional standard of dress that everyone working there has to follow.

One of my cousins (not my aunt's kid) got a job there, and on the first day of work, she showed up with a pierced tongue and a lip ring (this was before aunt got the hospital to ban lip, nose and tongue jewelry). My aunt made her take them off.