One of Canada鈥檚 most vital trade arteries is cut off as employers at most of British Columbia鈥檚 ports lock out their workers in a dispute involving about 700 unionized foremen.

The BC Maritime Employers Association says it defensively locked out members of the International Longshore and Warehouse Union Local 514 after the union began strike activity yesterday.

However, union president Frank Morena says the employers grossly overreacted to the union鈥檚 original plan for an overtime ban, adding that its negotiators are ready to re-engage in talks at any time.

Canadian political and business leaders have expressed concern with another work stoppage at the ports, after job action from the big railways earlier this year and a 13-day strike in a separate labour dispute last year.

The Greater Vancouver Board of Trade says it is relaunching its Port Shutdown Calculator, a tool to illustrate the economic damage caused by the labour dispute and introduced during the job action last year.

Board president Bridgitte Anderson says the latest port shutdown will disrupt $800 million worth of goods daily, with every hour of the closure fuelling inflation.

鈥淭his shutdown is the latest in a long line of highly damaging labour disputes that have hurt Canada鈥檚 economy and international reputation,鈥� Anderson says.

鈥淭hrough the Port Shutdown Calculator, we want to demonstrate the profound and escalating impact of this labour dispute.鈥�

The employers and the workers represented by Local 514 have been without a contract since March 2023.