Owning a Prison is a brilliant way to hire contract labor, to build widgets, without the shipping costs of having your product made in Asia. Your contractors are amenable to whatever pittance they earn so they can upgrade their shivs and buy a pack of smokes.
There is a lot of turnover in your staff tho. Each contractor has their own contract length. Even with the turnover being so high, don't worry most of these employees tend to come back to you quite quickly, looking for more work.
yes it's a terribly corrupt system with misaligned incentives