To encourage managers to participate in these activities, well-led businesses tend to recognize and reward people who successfully develop leaders. This is rarely done as part of a formal compensation or bonus formula, simply because it is so difficult to measure such achievements with precision. But it does become a factor in decisions about promotion, especially to the most senior levels, and that seems to make a big difference. When told that future promotions will depend to some degree on their ability to nurture leaders, even people who say that leadership cannot be developed somehow find ways to do it.