The employer brought a motion to enforce a settlement agreement regarding three grievances.
During mediation, the union made an offer to resolve the grievances and explicitly left it open.
The employer later accepted the offer and provided draft minutes of settlement.
The union advised that the grievor no longer agreed to the settlement.
The arbitrator found that the union's offer was left open and the employer's acceptance crystallized the agreement, creating a binding settlement from which the union could not withdraw.
The motion was granted and the agreed terms were ordered.