The Labourers' International Union of North America, Local 837 filed a jurisdictional dispute claiming that its members should have been assigned to tend carpenters erecting and dismantling scaffolding for Doug Chalmers Construction Limited at an Esso Refinery Plant.
The Ontario Labour Relations Board considered factors including collective agreements, safety, skill and training, economy and efficiency, and area practice.
The Board found that while some factors favoured the labourers, the factors of area practice (specifically the practice of specialty scaffolding contractors) and economy and efficiency strongly favoured the carpenters.
The Board affirmed the employer's assignment of the work exclusively to the carpenters.