Objectives:
The aim of the study was to search for the relationship between insomnia, stress, and occupational burnout and to identify factors influencing their severity among health care workers

Methods:
This survey-based study was conducted among 216 health care workers. It was performed using the author questionnaire, the Perceived Stress Scale (PSS-10), the Athens Insomnia Scale (AIS), and the Maslach Burnout Inventory (MBI).

Results:
Analysis of the effects of stress (PSS-10) and insomnia (AIS) on occupational burnout showed that stress correlated significantly (p ˂ 0.05) and positively (r ˃ 0) with all MBI subscales; that is, the more severe the stress, the higher the levels of emotional exhaustion, depersonalization, but also personal accomplishment. Insomnia correlated significantly (p ˂ 0.05) and positively (r ˃ 0) with all MBI subscales – the more severe the insomnia, the higher the levels of emotional exhaustion, depersonalization, but also personal accomplishment

Conclusions:
(1) Age and work experience were the sociodemographic variables that determined the occurrence of insomnia among the surveyed participants. (2) The form of employment may be an important factor that determines the level of stress, insomnia, and job burnout. Those employed under permanent contracts had lower levels of stress and job burnout, more often suffered from insomnia, and had higher levels of personal accomplishment. (3) In the study group, stress and insomnia influenced all aspects of job burnout. As stress and insomnia increased, so did levels of depersonalization, emotional exhaustion, but also personal accomplishment.