Union Issues Strike Notice to CP Rail as Groups Ask Ottawa to Prevent Work Stoppage

Canadian Pacific Railway locomotives are shunted around a marshalling yard in Calgary in a file photo. Jeff McIntosh/The Canadian Press

Canadian Pacific Railway Ltd. said Thursday it has received strike notice from the union representing its engineers, conductors and other train employees.

The move is the latest escalation in a labour dispute at the Calgary-based railway that could result in a potential nation-wide work stoppage as early as 1 a.m. EST on Sunday.