The applicant referred a grievance to arbitration.
The respondent sought a determination under section 150 of the Labour Relations Act as to whether the work was within the industrial, commercial and institutional sector of the construction industry.
The respondent argued that the intervener union and others should be given notice and entitled to participate.
The applicant opposed their participation.
The Board applied the criteria for standing and found that the intervener union represented the employees who performed the work in the first phase of the project and may represent employees in future phases.
The Board ruled that the intervener union had status to intervene in the proceedings.