Despite stakeholders' desire for organizations to participate in corporate social responsibility (CSR) activities, some organizations do not invest in CSR due to uncertainty around the value it provides to performance. This research investigates the effect size of the relationship between CSR and performance via a meta-analysis of 17 articles. A series of performance-indicating groups emerged and effect sizes were calculated using the Comprehensive Meta-Analysis software. These groups include in-role performance, extra-role performance, employees' affective attitudes towards organizations, and organizational-level outputs. Results suggest that CSR has a large effect on performance across a range of contexts. Implications for career counseling are discussed.