This study examined the relationship between structural empowerment and affective commitment, mediated by work engagement, in frontline social workers in Spain. Based on 2 samples (240 participants from public agencies and 226 participants from private agencies) and using linear regression models (bootstrapping method), our results showed 2 effects in the relationship between structural empowerment and organizational commitment: a direct effect fostering experiences of power and an indirect effect by increasing engagement at work. Empowering human resources management (HRM) practices (access to opportunities, information, resources, and support) is a useful tool for managers and administrators, with strong benefits for both social workers and agencies