The study determined the extent strategic planning affect performance of selected banks in Nigeria. Specifically, the study ascertained the extent organizational structure and Employee welfare affects organizational performance of selected banks in Enugu State. Survey design was adopted for the study. Sixty (60) questionnaires were administered to the staff of the selected banks in Nigeria. The data collected was analyzed and tested using regression analysis with aid of SPSS version 20. The outcome of the analysis revealed that organizational structure and employee welfare have effect on organizational performance of selected banks in Enugu State and this effect is statistically significant. Based on the findings, the study recommended among others that in attaining organizational objectives, human resource plays an indispensable role. Therefore, organization should take the employee welfare very serious in achieving effective result in an organization.