Each period has its own characteristics that affect people's lives. Sometimes they are happy events like an invention, while sometimes they are sad events like wars. All this shapes people's lives in a special way, including communication itself. The influence of various events also led to the development of the generation and their characteristics. The purpose of this graduate thesis was to show the influence of generational characteristics on business communication from the perspective of human resources management and to examine the opinion about the communication patterns themselves. The aim of the thesis is to present the characteristics of the X, Y and Z generations on a selected sample; the purpose of the above is to point out possible generational differences, and thus challenges within business communication. Also, the task of this thesis is to show the change of communication channels within the framework of business communications according to the selected generations. Two research techniques were used in this thesis, namely in-depth interviews and a survey. The aim of the research is to encourage people to think, understand and accept those who are different from themselves, and to jointly improve communication for the sake of the progress of themselves and society. The in-depth interview was attended by four employees in managerial positions in human resources departments. It was shown that most respondents agree with the time that there are differences between generations and that they affect the performance of the work itself. The survey was attended by 154 respondents who confirmed the existence of a generation gap. Also, through the survey, they confirmed the general characteristics and patterns of communication and behavior within an organization.