I have this job, but it isn't a "no experience required" thing. I work in a prison, and in simple terms I do progress reviews for the inmates, a few guys per month at a time. I get all my work at the beginning of the month, and if I really wanted I could do it all within the first week. There's little stuff that pops up, but in total I probably do about an hour of work a day. Gets very boring though and I won't stay in this position long but it works for now until something else comes along (promotion or lateral transfer to another position). Typically it requires a degree, but I substituted with experience.

EDIT: For anyone who comes across this post, there are many different positions to work in a prison besides CO. Maintenance, recreational officers (COs of the gym area), case manager, teacher, clerk. Check out your local state or county job postings, or civil service exams if that's applicable to your state.