Is rising productivity, not trade, behind falling manufacturing employment?
Core argument: Manufacturing employment as a share of total nonfarm employment has declined since the end of World War II, driven by rising manufacturing productivity and technological progress rather than international trade, the author argues.
Invoking manufacturing employment declines as a justification for protectionism fundamentally misunderstands the root causes of employment dynamics. Manufacturing employment as a share of total nonfarm employment has been declining since the end of World War II because manufacturing productivity has been increasing over that period. The main driver of manufacturing employment declines has been technological progress, not international trade. Figure 1 clearly illustrates declining manufacturing employment well before China’s accession to the WTO in 2001 or the North American Free Trade Agreement (NAFTA) coming into effect in 1994. If protectionists really wish to boost manufacturing employment, then they should be arguing for reducing manufacturing productivity, not imports. Supporters of protectionism often tout the quality of manufacturing jobs. But the average wage of a manufacturing job has been lower than [that] in a services sector job since 2018. US industrial output reached its post-World War II high in February 2025.




