The appellant, an interprovincial trucking company and federal undertaking, was ordered by a provincial Workers' Compensation Board officer to comply with provincial industrial health and safety regulations regarding safety footwear and safety committees.
The appellant challenged the orders, arguing the provincial regulations were constitutionally inapplicable to a federal undertaking.
The Supreme Court of Canada held that the provincial occupational health and safety regulations relate to working conditions, labour relations, and the management of the undertaking, and therefore cannot constitutionally apply to a federal undertaking.
The appeal was allowed and the provincial regulations were declared inapplicable.