That was interesting Rain Dog and I'm feeling proud of myself as I managed to make a blue thingy, drag it up to that space at the top and click on it!! (I'm terrible on the computer)
But having met and got to know many prisoners and also Prison Officers, I believe that quite a few prisoners/ex-prisoners have no inclination to work or 'go straight'. This is partly because many of them come from families with long histories of living on Benefits or crime. Many of them are still on Class A drugs and have little hope of getting 'clean'. And sad to say, most of them are intrinsically dishonest.
This sounds condemnatory I know, but it's realistic.
The 'work ethic' is hard to generate in someone without any working background.