The union applied for certification to represent a bargaining unit of full-time drivers and mechanics.
The employer responded by proposing a combined full-time and part-time unit and gave notice under section 8.1 of the Labour Relations Act.
A representation vote was held, and the union won a majority in the combined unit but lost in the full-time only unit.
The parties then swapped their positions on the appropriate unit.
The Board found the combined unit appropriate and held that section 8.1 only requires the union to have 40 percent membership support in the unit proposed in its application, not the unit ultimately found appropriate.
The union was certified to represent the combined unit.