56. Any disagreement on the interpretation or application of a group agreement must be settled according to the procedure provided for in the agreement.
If no such procedure is provided for or if the agreement provides for arbitration, the disagreement is submitted to an arbitrator. Sections 100 to 100.9 and 100.11, paragraphs a, c, d, e and g of section 100.12 and sections 100.16 to 101.9 and 139 to 140 of the Labour Code (chapter C-27) apply, with the necessary modifications.