Power and influence are characterized by an individual's ability to persuade other people to act in accordance with his wishes and needs. Whether or not someone's idea will be accepted in the organization depends significantly less on the idea itself, and more on the personal and positional power that person possesses. At the same time, personal and positional power should not be seen as something negative, because the efficient use of power and influence in the organization is one of the most important elements of management. Timely and correct application of power and influence guarantees any organization long-term sustainable and healthy business because it creates a motivated, positive and empowered team, a pleasant working climate and a great desire for progress. All this is of great importance for leading an organization, and the ability to use power and influence well distinguishes an exceptional leader from a "boss". The aim of the paper is to define and explain the difference between the concepts of power and influence. Although almost both concepts are most often viewed from the point of view of leadership, the paper will focus special attention on the sources and types of power in both leaders and followers, because followers can also have power and influence the change of attitudes and opinions of their superiors, and thus effectively operation of the entire organization.