Addressing inequality

Perhaps it is a measure of how far our society has moved away from addressing issues of inequality, but this week the International Monetary Fund released a report stating that declining unionization is fuelling income polarization in developed economies.  In their words:

"we find strong evidence that lower unionization is associated with an increase in top income shares in advanced economies during the period 1980–2010"

Union activists have been making this fairly obvious argument for decades. It is fascinating that the institution associated with neoliberal structural adjustment programs throughout the world is now recognizing that unions play an essential role in redistributing wealth.  What is your take?