The study is to examine the link between employees job performance and corporate social responsibility in the commercial banks in Nigeria, in order to achieve that two objectives were formulated (i)To Investigate the overall role and contribution of internal CSR and employee job performance. (ii)To investigate the level of internal CSR adoption in Nigeria and two research questions was developed (1)What is the level of internal CSR adoption in Nigeria commercial banks? (2) What is role and contribution of internal CSR and employee job performance in Nigeria? .The study employed both quantitative and qualitative methods to obtain data through a self-administered questionnaire survey, a number of semi-structured in-depth expert interviews and content analysis. The case study organization was selected because the majority of studies conducted in Nigeria on similar or related topics were conducted on business or public organizations. The outcome of the quantitative and qualitative analysis reveals that there is a link between employees job performance and corporate social responsibility. The findings of this study have practical implications for organizational leaders, managers and employees, and their organizations, particularly banks in Nigeria, besides offering scope for further research in the area of organizational development