The revolutionary changes sweeping the workplace, union‐management relationships, and the world economy have contributed to a sharply redefined role for the Federal Mediation and Conciliation Service (FMCS), the primary provider of mediation services to labor and management in the United States. In this article's three main sections, the authors trace the history and provide background information about FMCS; consider the changing role of mediation, driven by societal forces of change from the late 1970s to the present; and speculate on the agency's future and the expected expansion in the use of mediation.