This study was necessitated by the lack of research on internal corporate social responsibility (CSR) and organizational citizenship behavior among employees of higher learning institutions in Ghana, as well as the claim that employees of public higher learning institutions in Ghana lack commitment, motivation, trust, and engagement. The research focused on the impact of internal CSR on the organizational citizenship behavior (OCB) of employees in public higher learning institutions in Ghana. Employees of public higher education institutions across the country were selected using stratified random and convenience sampling techniques. The data were analyzed using SEM, confirmatory and exploratory factor analyses. The findings of the study showed that internal CSR has a significant role to play in the OCB of workers in public higher learning institutions in Ghana. Incentives and motivation, as well as organizational justice and fairness, were found to influence the employees' OCB. The study provides recommendations for management and stakeholders' strategic decisions.