Unifor union members at Cascade Aerospace in Abbotsford issued notice of job action Thursday.
A union news release states that a strike will start if agreement on outstanding issues cannot be reached by June 4.
"Our bargaining committee has made every attempt to reach a fair agreement over months of negotiations," said Nate Shier, Plant Chairperson for Unifor Local 114. "We will simply not accept massive concessions at a company as profitable as Cascade."
Abbotsford-based Cascade Aerospace is the primary DND contractor for repair and overhaul on the DND Hercules heavy transport plane fleet covering the Lockheed Martin C130 E, H and the new J models.
Unifor Local 114 represents 440 workers at Cascade, including aircraft maintenance engineers, interior technicians, painters, stores, maintenance, planning clerks and sheet metal mechanics.