Occupational stress or stress in the workplace can be defined as a change in a person’s physical or mental condition, in response to stressors in the workplace. According to the European Agency for Safety and Health at Work from 2018, occupational stress is the second most common health problem associated with the workplace after back pain, affecting 22% of employees in 27 European countries. The most well-known theories and models of occupational stress include the person-environment adjustment model, the job characteristics model, the control demand model, and the effort imbalance model. Models of the physiological response to stress focus on two main mechanisms: the adrenal medullary response, which includes adrenaline and norepinephrine, and the hypothalamic-pituitary-adrenal axis, which includes cortisol. Considering personal and organizational components, nursing is often among the 10 most stressful jobs in the world, and increased exposure to stress in nurses / technicians often leads to burnout syndrome, which is associated with negative conditions such as exhaustion, fatigue, somatization and social withdrawal. The most common sources of occupational stress in nurses / technicians can be divided into personal factors and the nature of nursing and the work environment, which includes organizational factors, characteristics and conflict of roles and interpersonal relationships. The research was conducted on a total of 87 respondents, employees of the Clinic for Gynecology and Obstetrics - operating room and delivery room and the Clinic for Anesthesia, University Hospital Center Rijeka. The research was conducted through a survey that is an adapted and abbreviated version of the Nursing Stress Scale. The original stress scale in nursing consists of a total of 34 items, and the adjusted stress scale used in this paper of a total of 27 items. The results of the survey show that 78.1% of nurses / technicians believe that the biggest source of stress in the workplace is a lack of staff, while 70% of respondents believe that they have too many administrative responsibilities. 24.1% of respondents stated that they often or very often lack support from superiors. 71.3% of respondents sometimes experience the inability to share negative emotions with colleagues, while respondents under the age of 20 more often do not have the opportunity to share negative emotions and experiences with other employees which causes stress in younger employees. The feeling of helplessness due to the lack of improvement in the patient in 55.2% of respondents is present sometimes, while in a third it is present often and very often, which increases the level of professional stress.