58.2. The Commission may, at the request of the employer and if it considers that it may foster the negotiation or making of a collective agreement, order a certified association to hold, on the date or within the time limit it determines, a secret ballot to give those of its members that are included in the bargaining unit an opportunity to accept or refuse the last offers made by the employer concerning all the matters still in dispute between the parties.
The Commission may order the holding of such a ballot only once during the negotiation of a collective agreement.
The ballot shall be held under the supervision of the Commission, according to the rules determined by the Commission.