Why Don't Globalization and Technology Lead to a Collapse in Unionization in Canada?

Paul Krugman has agreed to use his blog this week as a jumping off point for great CEPR papers of the past (yes, I'm kidding), but he gives us a great segue into an old paper on unionization rates in Canada with his latest blogpost. In his post Krugman makes the simple point that if inevitable forces like globalization and technology were responsible for the decline in unionization rates in the United States then we should expect to see a comparable decline in Canada. After all, Canada's econ...