The need for pension reform is widely discussed against the backdrop of falling fertility rates and rising longevity. These developments challenge pension systems which in many countries already encounter problems with pension adequacy and financial sustainability. In the debate, reference is often made to Denmark as a model for pension system reform. This book offers the first coherent and in-depth description and analysis of the Danish pension system and its structure and performance. As is well-known to scholars and experts, there is a huge leap from considering general characterisations of pension systems in terms of various performance indicators to understand the structure of particular pension systems. This book aims to introduce these aspects to an international readership, explaining the structure and design of the pension system and its performance, benefit structure, regulation, critical reforms, and macroeconomic implications, as well as investment policies in pension funds in general.