A recent blog post from the Economic Policy Institute shows an interesting connection between union density and the share of income. According to their research, in the United States as membership in unions expanded after the New Deal policies of the 1930’s, the share of the income going to the top 10% of earners decreased. And since the 1970’s as union membership has declined, the share of income going to the top 10% has grown.
These figures are not surprising. And to me, this underlines the importance of concerted action and public policy that is targeted to supporting the working class.