The IBEW — which represents 750 signals and communications workers — had issued a 72-hour strike notice on January 25.

Train cars are seen in an aerial view as workers repair tracks at Canadian National Rail's Thornton Yard, in Surrey, B.C., on Thursday, August 22, 2024. THE CANADIAN PRESS/Darryl Dyck MONTREAL ...

CN Rail in December ratified four-year collective deals with Unifor covering about 3,300 workers in mechanical, clerical and intermodal functions. The agreements included 3% wage increases annually.