The applicant union filed a jurisdictional dispute under section 99 of the Labour Relations Act, 1995, challenging the responding employer's assignment of removing and replacing loose concrete blocks over boilers at a nuclear power plant to the responding union (Boilermakers).
The applicant claimed the work should have been assigned to its members, while an intervenor union argued for a composite crew.
After reviewing the employer's past practice evidence, the Board declined to change the assignment and confirmed the work was properly assigned to the Boilermakers.