The distinguished International Seminar on Macroeconomics (ISoM) has met annually in Europe for thirty years. The papers included in ISoM 2006 discuss the relationship between prices and productivity in the OECD; monetary policy impact on inflation and output; implications of rising government debt; the relationship between consumption and labor market tightness; variation in real wages over the business-cycle; production sharing and business cycle synchronization in the accession countries; and pension systems and the allocation of macroeconomic risk.