This study examines the effects of corporate social responsibility (CSR) on employee attitudes (affective commitment and job satisfaction). Based on a sample of 1,249 employees in 40 firms, collected across multiple time points from multisource data, hierarchical linear modeling was employed to examine the mediating role of relational social capital between CSR and employee attitudes and the moderating role of communication in this relationship. The results indicate that CSR has a positive influence on affective commitment and job satisfaction and that this is fully mediated by relational social capital. However, the moderated mediation effects of communication were insignificant. The results suggest that firms may "do well" by eliciting positive employee attitudes through relational social capital stemming from "doing good." Implications and directions for future research are discussed.