Details

Subject(s)

• Wage differentials [Browse]
• Emigration and immigration—Economic aspects [Browse]
• Labor mobility [Browse]
• Immigrants—Government policy [Browse]

Series

Working paper series (National Bureau of Economic Research) ; Number 18307. [More in this series]

Summary note

There is a large body of evidence indicating that cross-country differences in income levels are associated with differences in productivity. If workers are much more productive in one country than in another, restrictions on immigration lead to large efficiency losses. The paper quantifies these losses, using a model in which efficiency differences are labor-augmenting, and free trade in product markets leads to factor price equalization, so that wages are equal across countries when measured in efficiency units of labor. The estimated gains from removing immigration restrictions are huge. Using a simple static model of migration costs, the estimated net gains from open borders are about the same as the gains from a growth miracle that more than doubles the income level in less-developed countries.

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