I've hired several felons in the past, trying to do my part as a good Christian and give them a second chance. None of them still work here.
The prison system is not designed to create productive members of society. Once they've been in the big house, they become institutionalized and unable to think for themselves. If you want an employee that will do exactly what you tell them and then sit there and wait for you to tell them exactly what to do next, ex-cons are probably for you. If you need someone that can think for themselves, keep looking.
Oh, and about 1/2 of them stole from me when they quit or disappeared off the face of the Earth. I know they need jobs but not from me.