Longshoring activity at the Port of Montreal is set to grind to a halt as an employers’ group locks out 1,200 union members.

The Montreal Longshoremen's Union rejected the final offer made for a new labour contract, the Maritime Employers Association (MEA) said on Sunday. The MEA has no choice but to declare lockout as of 9 pm,

The employers' association at the Port of Montreal has issued the dockworkers' union a "final, comprehensive offer," threatening to lock out workers at 9 p.m. Sunday if a deal isn't reached.

The clock is ticking on a threat by the employers association at the Port of Montreal to lockout some 1,200 dockworkers if their union doesn't agree to a deal on what it calls a final offer last week.