The complainant union (IAM) filed a jurisdictional dispute regarding the assignment of maintenance work on 16 systems at the employer's mill to the respondent union (IBEW).
The IAM argued that the work, which involved electronic instrumentation, fell within its jurisdiction due to technological changes from pneumatic and hydraulic systems.
After the IAM completed its case, the IBEW brought a motion for non-suit.
The Board reviewed the evidence and the collective agreements, finding that the IAM's agreement covered pneumatic, hydraulic, and fluidic instrumentation, while the IBEW's agreement covered electronic instrumentation.
The Board concluded that the IAM failed to establish a prima facie case that the work was improperly assigned, granted the non-suit motion, and dismissed the complaint.