MONTREAL, June 3 (Reuters) - Montreal-area Safran workers who make components for landing gear used in Airbus and Boeing jets will begin an unlimited general strike on Tuesday over pay, a union official told Reuters on Monday.

It comes as planemakers are wrestling with supply chain snags due to parts shortages, and unions are capitalizing on tight labor markets and high inflation to win hefty contracts at the bargaining table across North America. (Reporting By Allison Lampert in Montreal Editing by Chris Reese)