Listen to people in every field and you'll hear a call for more sophisticated and thoughtful leadership--for leaders who can solve more complex problems than the human race has ever faced before. But these leaders won't simply come to the fore; we have to develop them, and we must cultivate them as quickly as is humanly possible. Changing on the Job is a means to this end. Leadership discussions often begin with tips and toolkits that take for granted the readiness of our leaders to face the challenges of today. Changing on the Job builds on sophisticated theories of adult growth and development.