This casebook adopts a truly modern approach to labor law in the United States, introducing students to the subject as it is practiced today. It is built around two important trends: the shift of union density from the private sector to the public sector and the growth of organizing outside the NLRA process. The third edition adds a new coauthor: Richard F. Griffin, Jr., who served as the NLRB's General Counsel under President Obama. It also includes the numerous changes in private-sector labor law made by the NLRB under President Trump, Janus v. AFSCME, and more.