Hernández-Díaz documents the 20th-century history of the Puerto Rican labor movement with this first scholarly treatment of labor-management relations on the island. While the United States mainland and Latin America have influenced labor relations in Puerto Rico, significant legal, political, economic, and social factors are unique to the region, and the author offers a comprehensive analysis of the similarities and differences between the U.S. and Puerto Rican systems. Drawing on official documents and reports from unions and local and federal government agencies, labor-management cases from the executive and judicial branches, newspaper and academic articles, books, and personal interviews, she examines union organizing, collective bargaining, contract administration, labor-management conflict, and procedures for resolution within the Puerto Rican industrial relations system. Students of labor-management relations and those who study public administration, social or political science, and labor law, as well as workers, unions, managers, and labor relations officials, will find this a valuable reference.