This volume brings together contributions on the major economic policy issues which have opened up as a result of the immanent process of European Union Enlargement. The issues analyzed range from modelling and analyzing the costs and benefits of enlargement, to challenges for macroeconomic policy both at the EU level and in the new member countries to the state of affairs in the new member countries with respect to sectoral policy reforms such as those undertaken in the financial sector and in competition policy, and the impact of enlargement on Europe's trade policy agenda.