The Department shall, in so far as possible, employ at useful work committed persons confined in institutions and facilities of the Department, who are over the age of compulsory school attendance, physically capable of such employment, and not otherwise occupied in programs of the Department. Such employment shall equip such persons with marketable skills, promote habits of work and responsibility and contribute to the expense of the employment program and the committed person's cost of incarceration.
730 ILCS 5/3-12-1