Princeton economists find that unions had historical role in helping address income inequality
Decent read here on how the lack of union membership has allowed for greater wage inequality. My argument is that we are more dealing with a third and fourth industrial revolution, coupled with subsequent labor issues, on a system which greatly rewarded the entrepreneur and capitalistic class. Payroll and wages are - by design - capped at levels. The largest offenders are the largest employers.
“The labor market and economy are evolving in a way that’s giving employers increased power over workers,” he said. “Unions were, at least at one point, an important institution for resisting and adding some balance.”