The labour dispute between educational workers, represented by the Canadian Union of Public Employees, and Doug Ford’s Progressive Conservative government has escalated this week. The union issued its strike notice on Sunday and the government responded with back-to-work legislation that included the controversial notwithstanding clause on Monday.Talks broke down on Thursday afternoon after the mediator decided the two sides were still too far apart. The union has decided to proceed with a protest that the province’s legislation has made illegal. The Globe’s future of work reporter Vanmala Subramaniam explains why many union leaders across the country are keeping a close eye on what happens next.Questions? Comments? Ideas? Email us at thedecibel@globeandmail.com