that affected managers' productivity. We use email data and a survey to explore the mechanisms behind these spillovers and … find that managers' increased output arises from reductions in the need to help lower level employees. Accounting for …

This paper develops a novel method to identify the causal contribution of managers to team performance. The method … requires repeated random assignment of managers to multiple teams and controls for individuals' skills. A good manager is … someone who consistently causes their team to produce more than the sum of their parts. Good managers have roughly twice the …

30% of the value mutual fund managers add can be attributed to the firm's role in efficiently allocating capital amongst … its mutual fund managers. We find no evidence of a similar effect when a firm hires managers from another firm. We …

, labor and "managers", each with a distribution of ability levels. Production combines a manager of some type with a group of … diminishing returns to the number of workers. We examine the sorting of factors to sectors and the matching of factors within …