This research paper examines the relationship between corporate social responsibility (CSR) and worker-member satisfaction in social economy enterprises. Focusing on an intercity passenger transport company in Spain, the study examines the impact of CSR practices on worker-member satisfaction. The actions of the company were analyzed, and information was collected from 252 worker-members through a questionnaire on the aspects that make up CSR according to the European Commission. The research introduces a novel perspective by bridging the fields of CSR, social economy enterprises, and the intercity passenger transport sector, which have received limited attention together. The findings reveal a significant positive influence of CSR on worker-member satisfaction, highlighting the value of responsible business practices in enhancing employee satisfaction. This study contributes valuable insights to the literature on CSR and its impact on worker-member satisfaction and provides practical implications for social economy enterprises seeking to promote sustainable development through worker-members engagement. The contribution of this work is the method used itself, which allows the company to identify areas for improvement and make decisions when developing its CSR strategy.