I study how the relative efficiency of high- and low-skill labor varies across countries. Using microdata for countries at different stages of development, I document that differences in relative quantities and wages are consistent with high-skill workers being relatively more productive in rich countries. I exploit variation in the skill premia of foreign-educated migrants to discriminate between two possible drivers of this pattern: cross-country differences in the skill bias of technology and in the relative human capital of skilled labor. I find that the former is quantitatively more important, and discuss the implications of this result for development accounting. (JEL I26, J24, J31, J61, L16, O15)

中文翻译：

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各国熟练劳动力的相对效率：测量和解释

我研究了高技能和低技能劳动力的相对效率在不同国家之间的差异。使用处于不同发展阶段的国家的微观数据，我记录了相对数量和工资的差异与富裕国家的高技能工人相对更高的生产力是一致的。我利用受过外国教育的移民技能溢价的差异来区分这种模式的两个可能驱动因素：技术技能偏见和熟练劳动力相对人力资本方面的跨国差异。我发现前者在数量上更重要，并讨论了这一结果对发展核算的影响。（JEL I26、J24、J31、J61、L16、O15）