Objectives: Investigate the characteristics of mental health and behavior, socioeconomic and sociodemographic characteristics of employees of the General Hospital Zabok and the Hospital Croatian Veterans during the pandemic of the COVID - 19 infection, and to evaluate the existence of a connection between the observed variables. Study design: Cross-sectional epidemiological study Materials and Methods: Respondents are employees of the General Hospital Zabok and the Hospital Croatian Veterans of both sexes, regardless of whether they are health or non-health personnel. The survey was conducted with an anonymous survey questionnaire that the respondents filled out independently and voluntarily. Results: The study processed data obtained from 360 respondents. The results obtained from this research showed that the biggest difficulty with sleep among the respondents was related to waking up during the night or early in the morning once or twice a week. Poorer sleep quality was recorded in subjects with below-average material incomes, and in healthcare workers compared to non-healthcare workers. Symptoms of mild depression were detected more in female subjects than in male subjects. When we talk about anxiety, we can say that more female respondents felt symptoms of anxiety than male respondents, and that anxiety was felt most by respondents with a lower level of education (completed primary school). Conclusion: The impact of the COVID - 19 pandemic on mental health was observed among the respondents of the General Hospital Zabok and the Hospital Croatian Veterans. Based on the results of this research, we can conclude that there is a mutual connection between the socioeconomic and sociodemographic characteristics of the respondents and mental health.