You could address this by a punitive tax regime for prisoners. Then the person could still be earning more than a few cents per hour but additionally is contrib

You could address this by a punitive tax regime for prisoners. Then the person could still be earning more than a few cents per hour but additionally is contributing more to society via taxes. This also mitigates the undercutting of the non felon labour market. I'm not really advocating for this, but it'd be one angle to consider.