105 CMR, § 164.315
The program shall be open to provide treatment and to administer medications at least six days per week, year round; provided nothing shall limit the Licensed or Approved Provider's ability to dispense medication for take-home use in accordance with federal requirements including on days the program is closed, such as on Sundays and state and federal holidays. Consideration should be given to any identified barriers to receiving and remaining in treatment including, but not limited to, patient transportation, childcare, employment, and educational needs. Services must be provided during hours that meet the needs of the overwhelming majority of patients, including hours outside of the traditional 9:00 A.M. to 5:00 P.M., Monday through Friday work schedule.
105 CMR, § 164.315