The concepts and theories surrounding the economics of unemployment have multiplied and evolved over the course of the twentieth century and into the twenty-first. From Kalecki's theories on the causes of unemployment and policies to achieve full employment to Post-Keynesian economics and New Consensus Models, this volume seeks to provide an overview of the debates which have surrounded the issue of employment in the world of economics, as well as offering fresh insights into an issue which has been the cause of long-standing debate. With contributions from many experts in the area, this book explores a variety of topics, which include: the relevance of Keynes today to analysing unemployment in both rich and poor countries; Keynesian involuntary unemployment and modern macroeconomics; growth and unemployment in an extended Kaldorian model; Post-Keynesian economics and New Consensus Models (NCM); the 'unemployment bias' of the New Consensus view of macroeconomics; unemployment and the natural interest rate in a Neo-Wicksellian Model; and labour market issues and monetary shocks from a theoretical perspective. This book is an essential companion for all interested to understand more about past debates and current issues in the economics of unemployment.