Job satisfaction is a dimension of organizational behaviour, which can influence different levels of it. Knowledge of nurses' job satisfaction is important for health organizations, as it can affect various levels such as quality and safety of care, patient satisfaction, and factors of the nurses' wellbeing. Policy makers must know nurses' job satisfaction and implement strategies to improve or maintain them. One of those strategies could be Clinical Supervision. Nursing research is increasingly revealing that Clinical Supervision is crucial not only to support nurses and help them to develop and improve their practices, but also to bring a greater job satisfaction. This descriptive and exploratory study aims to evaluate the nurses' job satisfaction in three surgery and two medicine wards of Unidade Local de Sande de Matosinhos (ULSM), before the implementation of a Contextualized Clinical Supervision Model (CCSM). Data were collected in 2016/2017, using the "Professional Satisfaction Scale of ULSM" (PSS-ULSM), that assess the nurses' satisfaction regarding four sub-scales - head nurse, professional relations, workplace and quality improvement -, according to a 5-point Likert scale. From the 91 participants, the majority (85,7%; n=78) were female, and the average age is 35 years old (SD=6,98 years). Of the four sub-scales that were assessed, the one that has a higher average is related to the head nurse (M=3,490), and the one that has lower average is related to the professional relations (M=2,719). All the four sub-scales from the PSS-ULSM can be improved to grant higher levels of nurses' job satisfaction. (C) 2019 Published by Future Academy www.FutureAcademy.org. UK