Movement of people: Workers move from one country to another partly to find better employment opportunities. The numbers involved are still quite small, but in the period 1965-90, the proportion of labor forces round the world that was foreign born increased by about one-half. Most migration occurs between developing countries. But the flow of migrants to advanced economies is likely to provide a means through which global wages converge. There is also the potential for skills to be transferred back to the developing countries and for wages in those countries to rise.