This study empirically tests whether corporate social responsibility (CSR) is a value-increasing investment by estimating the effect of antitakeover provisions on CSR. Results indicate that managerial entrenchment measured by the G-index of antitakeover provisions is negatively associated with CSR. However, this negative effect is driven by CSR strengths; G-index has no significant effect on CSR concerns. Overall, this study supports the stakeholder theory of CSR by showing that CSR is a value-increasing strategic investment, as entrenched managers tend to reduce CSR instead of overinvesting in it.