Locomotive engineers and conductors at Canadian Pacific Railway went on strike early on Wednesday after failing to reach a contract agreement. The union and CP Rail said talks will be ongoing.
The stoppage means that shippers in Canada will find their wares stranded.
In addition to customer and supply chain impacts, the suspension of CP’s freight service will also impact many of the connecting railways.
About 4,800 engineers, conductors and traffic controllers at CP, nearly a third of its workforce, walked off the job after last minute talks on Tuesday did not result in a new labour contract.
Employees have been without a contract since the end of last year and have been in talks with CP since October 2011.