13. On pain of the lapse of the appeal, the party seeking revision of the decision of an administrator must, within thirty days following the mailing of such decision, file his application in the office of the secretary of the Commission, give notice thereof to the interested parties and to the administrator who rendered the decision and furnish to the Commission proof of such notice.
One of the parties may, for reasonable cause, request authorization from the Commission to file an application for appeal after the expiry of the delay provided for in the preceding paragraph, provided the other party does not incur serious prejudice thereby.
1950-51, c. 20, s. 14; 1951-52, c. 17, s. 4; 1953-54, c. 12, s. 2; 1960-61, c. 94, s. 2; 1975, c. 84, s. 5.