Consecutive changes in the development of corporate culture induced by the expansion of multinationals were confirmed by the survey, too. Work in a multicultural environment is also reflected in the change of management system, accepted values of corporate culture. In enterprises with foreign or mixed management more clan cultures followed by market cultures occur. The clan culture is characterized by flexibility, mutual solidarity, cohesion, morale and focus on human resources development. The majority of enterprises (23) with clan culture are involved in services, trade and information technologies. The criteria of efficiency in market culture are competition, mutual rivalry, and strong individualism. The main aim is to reach the set objectives, increase market share and to defeat the competition. Not every employee has the capacity to handle a job in this challenging competitive environment and the stronger are usually the winners.