At the risk of being boorish about the subject...
I was recently released from Las Vegas County Jail (CCDC) where all sentenced inmates, myself included, are forced, by state law, to "work" in some manner in the jail.
In this case, work consisted of 11-hour shifts, 6 days a week, of ultra back-breaking kitchen work. We were not even allowed to have water cups anywhere outside the break room.
They actually yelled faster! faster! as we ran "the line"...I never could get over that one. All that was missing were the whips and the guards with shotguns spitting tobacco.
We processed approx. 10 thousand trays per day, and were constantly harassed and threatened big time by the corporate kitchen staff in charge. It wasn't enough that we were clocking 60-70 hours a week for the grand total of 1 extra tray per meal (not every meal grant you, just the ones we were working during), but you could actually get thrown in the box and lose gain time (more days in jail) for eating a cookie or some trivial such thing.
If you refused to work, you were put in the box and 5 days were added to your sentence.
I did the math...2 shifts of 28 workers 365 days a year...with overtime and all that, approx $50k per week($2.6mil/year) of free basically coerced slave labor for the Aero-mark Corporation that ran the kitchen.
[edits]