@journal {427826, title = {"Augmenting the Human Capital Earnings Equation with Measures of Where People Work," JOLE 36:S1 (2018), Special Issue on Firm Heterogeneity and Income Inequality.}, volume = {36}, number = {S1}, year = {2018}, abstract = {We augment standard log earnings eq1uations for workers in US manufacturing with variables reflecting measured and unmeasured attributes of their employer. Using panel employee-establishment data, we find that establishment-level employment, education of co-workers, capital equipment per worker, and firm-level R\&D intensity affects earnings substantially. Unobserved characteristics of employers captured by employer fixed effects also contribute to the variance of log earnings, although less than unobserved characteristics of individuals captured by individual fixed effects. The observed and unobserved measures of employers mediate the effects of individual characteristics on earnings and increase earnings inequality through sorting of workers among establishments.}, author = {Erling Barth and James Davis and Richard B. Freeman} }