Section 171. Inmates to be employed; products of labor of inmates

1. The
  commissioner  of  correctional  services  and  the  superintendents  and
  officials  of  all  penitentiaries in the state may cause inmates in the
  state correctional facilities and such penitentiaries who are physically
  capable thereof to be employed for not to exceed eight hours of each day
  other than  Sundays  and  public  holidays.  Notwithstanding  any  other
  provision of this section, however, the commissioner and superintendents
  of state correctional facilities may employ inmates on a volunteer basis
  on  Sundays  and  public  holidays in specialized areas of the facility,
  including kitchen areas, vehicular garages, rubbish pickup  and  grounds
  maintenance,  providing,  however,  that  inmates  so  employed shall be
  allowed an alternative free day within the normal work week.
    2. Such labor shall be either for the purpose  of  the  production  of
  supplies  for  said  institutions,  or  for  the state, or any political
  subdivision thereof, or for any public institution owned or managed  and
  controlled  by  the  state, or any political subdivision thereof; or for
  the purpose of industrial training and instruction, or partly  for  one,
  and partly for the other of such purposes.