Abstract
Objectives: This study aimed to evaluate the relationship between quiet quitting and burnout among nurses, considering the influence of sociodemographic and occupational factors in healthcare settings. Methods: This cross-sectional, observational, and quantitative study was conducted from April to July 2025 in health services in northern Portugal, involving 1097 nurses who completed a questionnaire, the Silent Employment Abandonment Scale, and the Shirom-Melamed Burnout Scale. Descriptive and inferential analyses examined associations between sociodemographic variables, work context, and outcomes. Results: The 1097 participating nurses showed a positive correlation between overall quiet quitting and total burnout across all domains. Burnout remained significantly associated with overall quiet quitting after adjustment, and physical and cognitive fatigue showed the most consistent independent associations across models. The strongest coefficients were observed for the 'lack of motivation' dimension. Conclusions: Quiet quitting was consistently associated with burnout among nurses after adjustment for sociodemographic and occupational factors. The pattern of results was stronger for physical and cognitive fatigue and for lack of motivation, supporting the interpretation of quiet quitting as an important correlation of occupational strain in nursing and reinforcing the need for organizational and leadership strategies that reduce fatigue and sustain professional engagement.