It touches on the question of rehabilitation but very superficially, when that should be the main point. Plenty of prison systems have voluntary work placement, not mandatory, and it benefits everyone.
Buried at the very end:
> In a series of interviews and surveys by the nonprofit Impact Justice for a six-part report on food in prisons, formerly incarcerated people reported widely varied experiences working in food production. In some cases, people said they received helpful training, enjoyed the fresh air, and snacked on food they grew. In other places, they found the jobs extremely difficult and were not allowed to eat the food they produced.