Trade and Labor
How international trade affects workers, wages, and working conditions -- and the long debate over labor standards in trade agreements.
Trade's Impact on Workers
The relationship between trade and labor is one of the most politically charged topics in economics. Trade theory predicts that when countries open to trade, industries that use the country's abundant factor intensively expand, while those that use the scarce factor contract. In practice, this means that trade liberalization in developed countries tends to benefit high-skilled workers and capital owners while hurting low-skilled manufacturing workers.
The Stolper-Samuelson theorem formalizes this: free trade raises the real income of the abundant factor and lowers the real income of the scarce factor. In the US, where capital and skilled labor are relatively abundant, trade with labor-rich China increased demand for skilled workers while reducing demand for less-skilled manufacturing labor. The result was not just job losses but a structural widening of wage inequality.