Code of Massachusetts Regulations
524 CMR - BOARD OF ELEVATOR REGULATIONS
Title 524 CMR 4.00 - Accident and injury reporting requirements
Section 4.02 - Post-accident Requirements

An elevator involved in an accident involving serious injury or serious mechanical failure shall be immediately shut down until express consent to resume operation is granted by a supervisor of elevator inspectors employed by the Office. In the event of such an accident or mechanical failure, the owner, operator, or person in charge of an elevator shall ensure that the elevator and area surrounding the elevator are secured and are not disturbed, cleaned, or altered in any way until such time as an inspector has completed an investigation. The only exception to this requirement shall be acts in furtherance of ensuring the safety of the area or a person, or for the extraction of an injured person.