This study focused on the macrosocial orientation of frontline social workers to develop an integrated model for professional identity. We used a nationally representative sample of 3069 frontline social workers in China and conducted confirmatory factor analysis, structural equation modeling, bootstrapping mediation, and multiple-group moderation analyses. The results show that cynicism and job characteristics, as a causal chain, serially mediated the relationship between macrosocial orientation and professional identity, and those relationships varied depending on the following three factors...