There is a highly significant and under-considered intersection and interaction between migration law and labour law. Labour lawyers have tended to regard migration law as generally speaking outside their purview, and migration lawyers have somewhat similarly tended to neglect labour law. The culmination of a collaborative project on 'Migrants at Work' funded by the John Fell Fund, the Society of Legal Scholars, and the Research Centre at St John's College, Oxford, this volume brings together distinguished legal and migration scholars to examine the impact of migration law on labour rights and how the regulation of migration increasingly impacts upon employment and labour relations. Examining and clarifying the interactions between migration, migration law, and labour law, contributors to the volume identify the many ways that migration law, as currently designed, divides the objectives of labour law, privileging concerns about the labour supply and demand over worker-protective concerns. In addition, migration law creates particular forms of status, which affect employment relations, thereby dividing the subjects of labour law. Chapters cover the labour laws of the UK, Australia, Ireland, Israel, Italy, Germany, Sweden, and the US. References are also made to discrete practices in Brazil, France, Greece, New Zealand, Mexico, Poland, and South Africa. These countries all host migrants and have developed systems of migration law reflecting very different trajectories. Some are traditional countries of immigration and settlement migration, while others have traditionally been countries of emigration but now import many workers. There are, nonetheless, common features in their immigration law which have a profound impact on labour law, for instance in their shared contemporary shift to using temporary labour migration programmes.