Occupational Exposure to Capital-Embodied Technical Change
研究了不同职业对资本体现型技术变革的暴露程度差异，发现要素替代弹性异质性是关键因素，该变革解释了1984-2015年美国几乎全部劳动力重新配置。
We study differences in exposure to factor-biased technical change among occupations by providing the first measures of capital-embodied technical change (CETC) and of the elasticity of substitution between capital and labor at the occupational level. We document sizable occupational heterogeneity in both measures, but quantitatively, it is the heterogeneity in factor substitutability that fuels workers’ exposure to CETC. In a general equilibrium model of worker sorting across occupations, CETC accounts for almost all of the observed labor reallocation in the US between 1984 and 2015. Absent occupational heterogeneity in factor substitutability, CETC accounts for only 17 percent of it