Add to ORKGACL-1International audienceWe suggest the first large-scale international comparison of labor supply elasticities for 17 European countries and the United States using a harmonized empirical approach. We find that own-wage elasticities are relatively small and more uniform across countries than previously considered. Nonetheless, such differences do exist, and are found not to arise from different tax-benefit systems, wage/hour levels, or demographic compositions across countries, suggesting genuine differences in work preferences across countries. Furthermore, three other findings are consistent across countries: The extensive margin dominates the intensive margin; for singles, this leads to larger responses in low-income groups; and incom...