The study aims to identify the prevalence and factors associated with Burnout in 127 graduates from Basic Health Units in the municipal network of a city in the metropolitan area of Porto Alegre. The research tools used were a questionnaire to obtain socio-demographic data and employment variables, the battery of psychosocial risk assessment and the Maslach Burnout Inventory. The results showed a prevalence of 36.2% of Emotional Exhaustion, 15.7% of Depersonalization and of 7.9% Professional Accomplishment. The association analysis shows that psychologists have higher levels of Emotional Exhaustion and Professional Accomplishment and doctors have higher levels of Depersonalization. The higher the pay, the higher Depersonalization and Professional Accomplishment levels go. The role conflict results in an elevation of the dimensions of Emotional Exhaustion and Depersonalization. The positive feedback from patients decreases Emotional Exhaustion and increases Professional Accomplishment, while feedback from supervisors also decreases Emotional Exhaustion.