63. Where a difference described in subsection 57(1) is submitted by the parties to an arbitrator or arbitration board, the costs, fees and expenses with respect to the arbitration proceedings shall, unless the collective agreement otherwise provides or the parties otherwise agree, be borne as follows:
63. En matière d’arbitrage des désaccords visés au paragraphe 57(1) et sauf stipulation contraire de la convention collective ou entente entre elles à l’effet contraire, chacune des parties supporte :