This study aims to determine the factors that cause burnout in nurses, who are critical stakeholders in health service delivery, and to prioritize these factors. For this purpose, Delphi and SWARA methods were used. The research was conducted in a private hospital serving Black Sea Region Türkiye. 10-unit manager nurses who are experts in their fields participated in the Delphi method. As a result of the three-stage Delphi implementation, 16 burnout causes were determined. The 16 identified causes were prioritized with the SWARA method. 47 nurses participated in the SWARA method. As a result of the research, it was determined that the most critical reason for burnout was not being able to get money for the work done/low salary. It was concluded that obscure patient relatives were the least important cause of burnout. It is thought that the financial and moral reward of nurses who work hard will be beneficial. It may be suggested to make satisfactory remuneration for the labor and service provided or to support and increase the raw wage with various contributions. It can be suggested to raise awareness among nurses about burnout and coping.