Purpose: The aim of this paper is to analyse mobbing in a large, non-profit, state-owned organization in order to find out to what extent mobbing is present and in what way it takes place. In addition, the purpose of the research is to analyse whether the extent of mobbing is connected to employee's age, gender and position. Methodology: In this quantitative research, a total of 355 opinions were collected using a random selection procedure within the selected large size, state-owned organization (between 1000 and 2000 employees). The results of the employees' experiences of mobbing were statistically analysed and tested. Results: Similar to other researches, a third of all respondents stated they have been affected by mobbing in the last three years. Additionally, we found out that younger employees are not affected more than older. Interestingly, there are also no gender differences as both genders seem to be affected similarly. Also, a management position does not mean a person is less exposed to mobbing. Finally, we confirmed that the most frequent type of mobbing is vertical mobbing (carried out by an employer / manager on employees or vice versa). Originality / value: The study fills a current gap in the research and understanding of mobbing in non-profit organizations in Slovenia as it presents the magnitude of mobbing experiences as well as the relations between the attackers and victims. The study also provides a good starting point for further research on this sensitive subject. Research limitations / conclusions: Since the research was limited to one non-profit organization, it makes sense to explore the phenomenon in different individual profit companies as well as non-profit organisations in order to create plans for preventing and limiting mobbing.