Stipulations. In the discretion of the Commission or presiding officer, the parties may, by written stipulation filed with the Commission or presiding officer at any stage of the proceeding, or by oral stipulation made at the hearing, agree upon any pertinent facts in the proceeding. In making its finding, the Commission or presiding officer need not be bound by any stipulation which is found to be in contravention of law or erroneous on its face.
950 CMR, § 59.04