This study investigates the subjective perception of the quality of working life of workers in healthcare organizations in Bulgaria. The study was conducted through an anonymous questionnaire. The survey includes a system of indicators that form a quality of life at the workplace. A cluster analysis was used to group the respondents into two groups according to their quality of life. The relationship between the quality of working life and the basic demographic characteristics has been studied. The results showed that QWL has a significant relationship with some socio-demographic characteristics of respondents (age, work experience, marital status, staff and unit profile).Some results are consistent with the results of other researchers, but there are others that differ. It will be a good idea to include additional variables in future research to clarify the complex interactions between socio-demographic characteristics and the quality of working life.