We explore the relationship between union density and labor shares using panel data on 35 industries, spanning the entire US economy, for the years 1983 through 2005. For the full sample, a standard deviation increase in union membership rates is associated with an increase in an industry’s...

This study provides evidence for the US that the secular decline in the labor share is not only explained by technical change or globalization, but also by the dynamics of factor taxation, automation capital (robots), and population growth. First, we empirically find indications of...