Training and Development as a tool for enhancing employees' performance, was undertaken to find out if the Training and Development has a positive effect on the performance of employees. Many employees have failed in their organization because their needs for training and development were not identified and provided for as a dispensable part of the management function. The aim of this study is to ascertain if training and development is really serving as a tool for enhancing employees' job performance in Nigeria thereby investigating the performance of the various employees of United Bank for Africa Plc and how employees training and development has gone as far as improving their operations. Four research questions were formulated from the objectives of the study and tested using simple percentage and two hypotheses were tested using Chi Square. The researcher made use of survey research design to determine whether there is a relationship between the dependent and independent variables. The research instrument used here is a questionnaire that was distributed to a sample size of one hundred and seventy (n=170) management and staff members of United Bank for Africa plc. Data were also source from the internet, economics textbooks and relevant newspapers and magazines. The major findings of this study states that the organization considers the training as a part of organization strategy and training program helped the organization to achieve its objectives. The findings also indicate that more training programs are provided to the new staff and also as per the requirement. Most of the time organization faces problems due to non-availability of the skilled trainer to train the employee.