Really informative article!

My colleague, Kris Warner, compared trends in unionisation over the last century in the United States and Canada. Several items jump out in his analysis. First, patterns in unionisation were comparable until the early 1970s. While union membership rates fell consistently in the US over the last four decades, they actually rose from the 1970s to 1990s in Canada.

In the last two decades they have been dropping in Canada as well, but at 31 per cent, the unionisation rate is still far above the 10 per cent level in the US and in fact is still above its early 1970s level. Clearly it was not just economic factors that explain the decline in unions in the US.
Canada proves the decline of unions is not inevitable - Opinion - Al Jazeera English