The applicant unions sought a declaration under section 1(4) of the Labour Relations Act that the respondent construction companies constituted a single employer.
The Board found that while there was no common ownership or corporate interrelationship between the unionized general contractor and the non-unionized subcontractor, there was a high degree of functional interdependence and economic reliance.
The subcontractor performed 85% of its work for the general contractor, relied on it for working capital, equipment, and administrative support, and had no independent public identity.
The Board concluded the entities were under common control and direction, and exercised its discretion to declare them one employer to prevent the erosion of bargaining rights.