There is no definitive or widely accepted job description for a leader. The typical role that calls for a leader is specifically about the duties and responsibilities that go hand-in-hand with a position of authority. The leadership aspect of a job is something that gets added on because the person’s title and position requires it. Contrast a data entry job against that of a Director of Information Services. The levels of authority and autonomy are greater for the director role for job responsibility reasons. So is the need for the director to have a wider and broader impact.