The thesis aims to analyze the role and work as a leader in the organization through systemic approaches and systemic thinking. Highlight the changes coming with the transition to an information / knowledge society and the replacement of manual workers' by knowledge workers. Emphasize the importance that not only tools have changed, but also paradigm. Take leader as a complex person, not only as an instrument of power, and find a way to balance on the way to his goal in such turbulent times. Look at the organization as a system by system theory and find a correct set of functionality. Starting with creation of rules, through the issue of putting the right elements to ensure the desired interactions between them.