This agenda-setting book shows how freedom of movement has made the integration of Europe's labour markets a contentious issue, for example in the aftermath of the eurocrisis, where workers had to make great sacrifices to enable the currency area to function. It argues that the process of market integration in Europe has undermined the power and influence of European workers and generated significant human costs. In starting from the position of labour, this book offers an alternative approach which balances the needs of justice and efficiency. With appeal across a wide range of readers interested in economic integration, it provides lessons for policymakers in how to integrate Europe's member states to better protect workers and citizens.