The Party's Over: The End of the Welfare State Boom in Western Europe provides the first comprehensive account of the West German Pension Reform Law 1972 (Rentenreformgesetz 1972 - RRG 1972), which marked the end of the period of rapid welfare state growth in Western Europe after World War II. Alfred C. Mierzejewski uses extensive archival research to explore how the law was conceived, how it was modified and expanded during parliamentary debate, and the effects that it had after it was enacted. Mierzejewski puts the reform into Western European context by comparing it with British and French efforts to develop their public pension systems since the seventeenth century. In doing so, The Party’s Over highlights both the general trends in post-World War II Western European welfare state development as well as the differences in how these three countries organized and managed their pension plans. Mierzejewski underscores the political risk that endangers old age pensions delivered by government mandated pay-as-you-go systems and demonstrates how policy matters, revealing how the end of the West European welfare state boom is relevant and significant for both workers and retirees today.