In this final paper, the importance of organizational culture and the impact it has on the operations of today's modern companies will be theoretically presented and explained. A proper organizational culture is one of the key prerequisites for the development of every company and ultimately the entire economy of a given country. In today's time of globalization, uncertainty, increasing challenges and changes in the market that occur more and more often in shorter time intervals, it is very important to implement a well-organized organizational culture in the company so that the company can respond as well as possible to possible changes and adapt to the market adequately way and thus had an advantage over its competition. In order for the organizational culture to be adequately implemented in the company itself, employees play a key role in this process because they are the representatives of the company wherever they appear and therefore of its organizational culture. A properly conceived organizational culture leads to greater worker efficiency because it reduces "idle work" and the worker knows exactly what is expected of him at all times. Cultivating organizational culture also contributes to increasing employee satisfaction. An employee who "just" does his job in the company is not truly satisfied and cannot bring additional value to the company as such, but on the other hand, employees who are satisfied and who cultivate the principles of their company's organizational culture will be much happier and more productive at their workplace and will propagate these principles further, will become a kind of "walking brand" of their company and thereby bring it additional value. A weak and unclear organizational culture can bring negative effects on business, which is best reflected in the example of countries that are still in transition or in development. The best example of this are public companies in which management and responsible people change very often, and such a management model cannot contribute to the development of organizational culture because every new administration brings new changes, so organizational culture cannot even develop in such an environment. To a large extent, the development of organizational culture depends on the leaders of the company, who must provide clear guidelines for its development and implementation in practice, as well as on all the company's employees and on their openness to its implementation, but it is certainly clear that a proper organizational culture gives the company added value and an advantage over the competition. this is the key to success in a market economy, especially today's subject to constant changes.