Reducing the costs of international labour migration, specifically worker-paid costs for low-skilled employment, has become an important item on the global agenda over the last years and is particularly pertinent for the UN’s Global Compact on Safe, Orderly and Regular Migration. Recruitment costs alone amount in most migration corridors to anywhere between one and ten months of foreign earnings and many migrants may well lose between one and two years of foreign earnings, if all costs are considered. This book is intended as a primer for evidence-based policy for reducing the costs of international labour mobility. The contributors include academics from law, economics and politics, but also authors from international organizations, non-governmental organizations, as well as the voices of migrants. The hope of the editors is that this small collection sets the basis for evidence-based policies that seek to reduce the costs of international migration. This book will be of interest to scholars and students of migration, globalization, law, sociology and international relations, as well as practitioners and policy makers.