Hamilton labour activists temporarily blocked access to a Canada Post distribution facility on Millen Road Wednesday night in solidarity with postal workers.

Members of the Industrial Workers of the World (IWW) blocked the entrance with members of CUPE and a handful of other unions. They played music and lit fires in two barrels to keep warm in the cold temperatures. They also blocked management and trucks from entering for at least half an hour at a time.

The protest was in support Canadian Union of Postal Workers (CUPW) in their battle with Canada Post, said Dan Browne, IWW organizer.

The goal, Browne said, is "to cause as much financial disruption to Canada Post as possible for their reckless negligence of workers' rights."

Some # HamOnt labor activists blocked access to Canada Post distribution facility on Millen Road last night. Here's some video of the scene <a href="https://t.co/7HcVaaJedQ">pic.twitter.com/7HcVaaJedQ</a> —@SamCraggsCBC

Hamilton police were on scene but mostly watched from a distance.

"Hamilton Police responded to a group of protesters at the Canada Post processing plant last night around 8:00 p.m.," said spokesperson Jackie Penman.

"It was a peaceful protest and there were no arrests. The group was not associated with Canada Post."

CUPW has been holding rotating strikes as a result of failed negotiations with the Crown corporation. The union is pushing for improved job security, an end to forced overtime and better health and safety measures. The f​ederal Liberals have passed legislation mandating the union members to return to work.

CUPW reps say its members can't picket, but members of other unions are. A similar demonstration happened Wednesday in Richmond, B.C.

Canada Post tweeted about the disruption, which began early in the evening.

"We can confirm individuals are illegally obstructing the movement of mail/parcels at our Hamilton Mail Processing Plant, 393 Millen Rd, Stoney Creek, Ontario," it tweeted. "We'll continue to take appropriate action to address illegal activity impacting the collection & delivery of mail/parcels."