Kroft, Kory; Mourifié, Ismael; Vayalinkal, Atom - National Bureau of Economic Research - 2024
This paper investigates the causal effect of job training on wage rates in the presence of firm heterogeneity. When training affects worker sorting to firms, sample selection is no longer binary but is "multilayered". This paper extends the canonical Heckman (1979) sample selection model - which...