Management is usually much broader in scope than leadership. Leadership focuses on behavioral issues. The leader tends to show more care and concern for people while the manager tends to be more focused on getting the job done with the people available. Leadership focuses on human interactions while management is interested in process and results. Fellow workers look to them for guidance and solutions.
Leaders work with inspiration while managers work with perspiration.
It is a sign of a well-balanced organization that is effective in selection and hiring employees when there are leaders in the company who are not managers. When a crisis develops, these informal leaders react quickly and take the proper action. I saw this happen when a warehouse full of finished goods caught fire and no managers were around. One of the warehouse workers took charge and looked after the safety of fellow workers and did what was possible to minimize the fire damage. We can see the effects of over managed and underled organizations when we look at some of the top companies in the country.