The Massachusetts Petition For Commitment Pursuant To G.L.C. 123 7 – 8 is a legal document that is used to process the commitment of an individual to a mental health facility. This document is used when an individual is believed to be a danger to themselves or others and requires involuntary treatment. The petition is used to initiate proceedings for the commitment of an individual to a mental health facility, and must include documentary evidence in order to be valid. There are two types of Massachusetts Petition For Commitment Pursuant To G.L.C. 123 7 – 8: Emergency Commitment and Voluntary Admission. Emergency Commitment is the involuntary commitment of an individual to a mental health facility when their mental health is a danger to themselves or others; Voluntary Admission is the voluntary commitment of an individual to a mental health facility for evaluation and treatment.