There are some occupations which make it dangerous to wear a ring or any type of jewelery. Electricians, machinist, any kind of manufacturing. They usually ask you to remove jewelery and put it in your pocket. Although when you take your vows you should wear your ring...
Gold is also a very good heat conductor. Hold a ringed finger near an operating forge or foundry furnace very long, and you'll have a blister under that ring.
I was a mechanic for years, and never wore my ring at work. Our safety office had that poster of a finger stripped of skin and muscle on every safety board. I started wearing my ring since I retired. My wife and her best friend were surprised to see it on my finger.