(1) M.G.L. c.127, §129D (Earned Good Time).

1. (a) An inmate may receive a maximum of 7.5 days a month deduction from sentence for his/her satisfactory performance in an approved employment, educational or vocational training program or activity. (Note: To earn credit for a month’s participation, inmates should normally be participating for 15 continuous days or more in a calendar month.) Such deductions shall be granted in the following manner:

   1. 1. Employment Programs. Deductions totaling not more than 2½ days a month may be granted to an inmate who is involved in one or more work program(s).
   2. 2. Education and Vocation Training Programs. Deductions totaling not more than 2½ days a month may be granted to an inmate who is involved in one or more educational/vocational training program(s).
   3. 3. Activities. Deductions totaling not more than 2½ days a month may be granted to an inmate who is involved in one or more approved activities.
2. (b) Any deductions from sentence earned pursuant to M.G.L. c.127, § 129D, once granted, cannot be forfeited for disciplinary infractions.

(2) M.G.L. c.127, §129C (Camp Time).

1. (a) For the satisfactory conduct of an inmate confined in a prison camp, the Commissioner or designee may grant a deduction from sentence of not more than 2½ days for each 30 day period spent in confinement in a prison camp.
2. (b) Any deductions from sentence granted pursuant to M.G.L. c. 127, § 129C once granted, cannot be forfeited for disciplinary infractions or escape from a prison camp.