There is a renewed interest in the size of labour supply elasticities and the discrepancy between micro and macro estimates. Recent contributions have stressed the distinction between changes in labour supply at the extensive and the intensive margin. In this paper, we stress the importance of individual heterogeneity and aggregation problems.
When the adoption of a new labor‐saving technology increases labor productivity, it is an open question whether the economy adjusts in the medium‐term by decreasing employment or increasing output. This paper studies the effects of cheaper electricity on the labor market during the Great Depression.