If the right policies are in place, labour migration can help countries respond to shifts in labour supply and demand, stimulate innovation and sustainable development, and transfer and update skills. However, a lack of international standards regarding concepts, definitions and methodologies for measuring labour migration data still needs to be addressed. This report gives global and regional estimates, broken down by income group, gender and age. It also describes the data, sources and methodology used, as well as the corresponding limitations. The report seeks to contribute to the 2018 Global Compact for Safe, Orderly and Regular Migration and to achieving SDG targets 8.8 and 10.7