“The output of a manager is the output of the organizational units under his or her supervision or influence. The question then becomes, what can managers do to increase the output of their teams? Put another way, what specifically should they be doing during the day when a virtually limitless number of possible tasks calls for their attention? To give you a way to answer the question, I introduce the concept of managerial leverage, which measures the impact of what managers do to increase the output of their teams. High managerial productivity, I argue, depends largely on choosing to perform tasks that possess high leverage.”