58. The right to strike or to a lock-out shall be acquired 90 days after reception, by the person to whom it is addressed, of the notice served on him or transmitted to him in accordance with section 52.1 or that he is deemed to have received in accordance with section 52.2, unless a collective agreement has been reached between the parties or unless, by mutual consent, they decide to submit their dispute to an arbitrator.
R. S. 1964, c. 141, s. 46; 1977, c. 41, s. 36; 1983, c. 22, s. 28; 1994, c. 6, s. 11.