Description: Low local wages are not a measure of intelligence. Research on the place premium, migration and pay differences reveals why the same skills can command radically different prices.
A person earning the equivalent of ¥100 an hour is not a “¥100-quality human.” Excellent engineers, mathematicians and skilled craftspeople exist in countries with very different wage levels. The price a labor market can pay is not a universal score of talent.
Minimum wage is not everyone's wage
A low statutory hourly wage in one region of Vietnam cannot describe every Vietnamese worker. Vietnam's National Statistics Office reported average monthly employment income of roughly 8.4 million dong for 2025. Cities and rural areas, industries and occupations differ. Converting one regional minimum into yen and calling it the country's average paycheck confuses three different measurements.
Economists study a “place premium”
Clemens, Montenegro and Pritchett examined wage data from over two million formal-sector workers in 43 countries, comparing workers with similar observable background, education and experience. Their 2009 study estimated that a Bolivian worker of comparable intrinsic productivity, willing to move, could receive roughly 2.7 times the wage in the United States. This is a historical model-based estimate, not a fixed multiplier for every person today.
Migration lotteries offer another clue
Comparing migrants with people who stay behind can be misleading because those who migrate may already be different. Some studies exploit immigration lotteries to compare people who received permission to move with those who did not. The broader lesson is that access to a different labor market, infrastructure, employers and customers can dramatically change earnings without implying an equally dramatic change in innate ability.
Beware the precise-looking global estimate
Suppose someone announces that 700 million people worldwide earn less than ¥100 an hour. Where did the percentage come from? If you assume 3.6 billion workers and assume that 20 percent fall below the threshold, the answer is 720 million. But the 20 percent is still an unverified assumption. Exchange rates, purchasing power, actual hours, unpaid family work and informal employment complicate the calculation. A multiplication problem is not automatically a survey.
Skill and the market for it
An individual's earnings depend on skill, yes, but also on equipment, legal access to jobs, education, demand and the prices customers can pay. The phrase “birth-country lottery” points to differences in opportunity, not differences in human worth. The same brilliant mental calculator can enter a different labor market and suddenly find a very different number on the payslip. Using the payslip to measure the brain is like asking a calculator to diagnose personality.
Sources: Vietnam National Statistics Office, Clemens et al., The Place Premium, World Bank, World Development Report 2023.
