Mo. Rev. Stat. § 217.337: Schedule of activities, work, and program, adherence to, exemption.

1. All general population offenders shall be expected to adhere to a schedule of activities of work and rehabilitative programs as prescribed for the offender by the department. This schedule of activities may include, but shall not be limited to:

(1) Academic education programs;

(2) Vocational training programs;

(3) Treatment programs; and

(4) Employment.

2. An offender may be excused from adhering to the required schedule of activities assigned to him if a reason can be established by the offender and validated by the chief administrative officer of the correctional center to which the offender is assigned.