What's the role of unions in the 21st century? - CalMatters
Strong Unions Will Boost America's Economy
Do labor unions make the economy less efficient? If so, what is the best way to do away with them? - Quora
Labor Unions - Econlib
Clean slate for worker power' promotes a fair and inclusive U.S. economy - Equitable Growth
Declining Profitability and the Evolution of the US Economy: A Classic
Labor Unions and the U.S. Economy
For Labor Day: On the Declining Relevance of Labor Unions
How the Department of Labor is Empowering Workers to Organize