Name a bad occupation for someone who is claustrophobic?

The list is innumerable that would exceed the discussion window. Essentially, jobs that require long periods of close quarters; anything that bound you in a small space should be avoided.

For example, Astronaut; aircraft fuel cell maintenance; numerous military disciplines require gas mask attire; a claustrophobic's worst nightmare would probably be joining the Navy and being sent to serve on a submarine. Frankly, to be perfectly honest, a claustrophobic should avoid military service entirely. because the unpredictability of that career path combined with the danger you may present to others.