According to a number of studies and experts, one of the most important aspects of current human resources management in the world and in the Czech and Polish Republic is wellbeing. Research in the field of wellbeing confirms that there is a positive mutual relationship between employees' wellbeing and organization business results. Employees with high level of wellbeing are more engaged, higher perform and then more contribute to the better organization performance through their higher work productivity and efficiency and lower turnover. How people are treated at work by organizations and their managers, especially line managers, strongly affect the level of their wellbeing. The aim of this study is to assess the wellbeing of employees of ...