Researching on the concept of work life balance (WLB) becomes imperative for any organization in order to enhance performance efficiency especially the sector concerned. This empirical research is focused on investigating the effect of work-life balance on the performance of money deposit banks in south-south region of Nigeria. In reviewing literature, the study explores alternative work arrangement and managerial support as dimensions of work like balance (the predicting variable), and performance as a criterion variable used for goal attainment as measure. 2562 staff of 12 banks spanning through six states was used as population size. Cochran sample size determination statistical technique was used to determine 485 sample size for the study. Questionnaire was used to collate data and was analyzed with Simple Linear Regression and Pearson product moment correlation with the aid of Statistical Package for Social Science (SPSS 17.0 windows). The result shows that work life balance demonstrated a great significant effect on the performance of money deposit banks as the dimensions alternative work arrangement such as compress work weeks, telecommuting, flexi time, job sharing and managerial supports predict employee goal attainment. Based on the findings, the study recommends that management should judiciously adopt and implement alternative work arrangement in order to offer a family-friendly atmosphere to attract and retain qualified employees to increase productivity.