Alike in many aspects of their histories, Australia and the United States diverge in striking ways when it comes to their working classes, labor relations, and politics. Greg Patmore and Shelton Stromquist curate innovative essays that use transnational and comparative analysis to explore the two nations’ differences. The contributors examine five major areas: World War I’s impact on labor and socialist movements; the history of coerced labor; patterns of ethnic and class identification; forms of working-class collective action; and the struggles related to trade union democracy and independent working-class politics. Throughout, many essays highlight how hard-won transnational ties allowed Australians and Americans to influence each other’s trade union and political cultures. Contributors: Robin Archer, Nikola Balnave, James R. Barrett, Bradley Bowden, Verity Burgmann, Robert Cherny, Peter Clayworth, Tom Goyens, Dianne Hall, Benjamin Huf, Jennie Jeppesen, Marjorie A. Jerrard, Jeffrey A. Johnson, Diane Kirkby, Elizabeth Malcolm, Patrick O’Leary, Greg Patmore, Scott Stephenson, Peta Stevenson-Clarke, Shelton Stromquist, and Nathan Wise