The walkout at one of Canada’s biggest seaports comes as workers at more than half of U.S. ports prepare to strike.

A union at the port of Montreal has begun a three day-strike at two terminals on Monday as workers demand higher wages, Port Montreal said in a statement. “Montreal Port Authority expresses its disappointment that no agreement has been reached between the MEA and the Longshoremen's Union to avoid a work stoppage,

Last Friday, the Syndicat des débardeurs du port de Montréal filed a 72-hour strike notice, saying its members who work at the Viau and Maisonneuve terminals intended to walk out from 7 a.m. Monday to 6:59 a.m. Thursday.