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 …

managers, coupled with bonuses based on their leadership rank among all leaders. Our intervention increased worker productivity …

managers, coupled with bonuses based on their leadership rank among all leaders. Our intervention increased worker productivity …

hostile behavior exhibited by managers. The motivations driving managers to adopt such behaviors are insufficiently understood …. To explore this phenomenon, we conducted a laboratory experiment examining the relationship between managers' use of … unfriendly leadership and labor market competition. We discern two labor market states: excess labor demand, where managers …