The study examined the effect of training as a correlate on productivity of workers in the First Bank Nigeria Plc and Access Bank Plc located in Lagos State. The study examined four research questions and four research hypotheses which were formulated in the null forms. The significance of the study was also examined which its scope was limited to First Bank Nigeria Plc and Access Bank Plc located in Lagos State. Extensive and related literature were reviewed in relation with various authorities under the following sub-headings: Theoretical framework, concept and nature of training, the need for training employees, concept of management development, corporate productivity, identifying training needs, factors that affect employees’ productivity, the outcomes of training of workers, types of training technique, and relationship between training and employee productivity. The methodology which further dwelt on the following: research design, population, sample and sampling technique, instrumentation, procedure for data collection and procedure for data analyses. Data analyses were carried out in which the bio-data and the questions were analysed using the simple percentage frequency count while the hypotheses formulated were tested with the application of the Pearson Product Moment Correlation Coefficient statistical tool at 0.05 level of significance. At the end of the exercise, the following results were obtained: training will significantly enhance productivity among bank workers, there is a significant gender difference in the performance of bank workers due to training, there is a significant difference in product knowledge of low income and high income bank workers, and training will significantly improve the performance of bank workers.