Public service union to picket at locations with more impact as strike enters Day 6

One of Canada's largest labour disruptions has entered a sixth day as the union representing thousands of striking public-service workers looks to hamper access to ports.

The Public Service Alliance of Canada says more than 100,000 of its staff remain on strike, some of whom are expected to move their picket lines Monday to strategic locations more likely to have an impact on the federal government. 

"We're actually going to be escalating those actions," said Chris Aylward, the union's national president, giving the example of heightened activity at "ports across the country."

Over the weekend, both sides accused each other of obstructing negotiations and being too slow to respond to key developments.