The diploma thesis analyzes and compares three life and social roles of one of the most well-known writers of Czech literature, Jaroslav Hasek. Specifically, it is his role as a storyteller, a journalist and a politician. My work is focused on the analysis of the blend and differences between these roles pertaining to the development and context of both the time period and Hasek. The analysis is divided into several parts and it tries to view Hasek from different points of view. Specifically, it deals with the author's historical genesis, then with the narratological analysis of short stories and finally the content analysis associated with the reference to Jaroslav Hasek's language resources.