The complainant union filed a jurisdictional dispute complaint regarding the assignment of work by a subcontractor.
The respondent union had initially filed a grievance demanding the work, but later withdrew it.
The respondent union then brought a motion arguing the Board lacked jurisdiction or should decline to inquire into the complaint since there was no longer a demand to change the work assignment.
The Board held that, assuming it had jurisdiction, it was appropriate to exercise its discretion not to inquire further into the complaint because the underlying dispute had disappeared with the withdrawal of the grievance.
The complaint was dismissed.