The performance of personnel in an organizational setting such as a university for future roles and responsibilities is dependent upon training and development. Thus, the training and development of personnel has become an invaluable asset in the accomplishment of organizational set goals around the world. It is in this vein that this study examines the need to train and develop personnel with the view to increase their productivity in the Nigeria's tertiary institutions beyond covid 19. The study adopts survey research design and three research questions were formulated to guide the study with the adoption of Exchange theory of Peter Blau as theoretical framework. Data were collected through questionnaires, interviews, and observations. Among the findings, study concurs that training and development of personnel serves is bedrock for high productivity, consolidation and sustainability of organizational goals. In addition, the study reveals that workers through value addition can efficiently perform their jobs, gains spirited improvement and seek self growth. Furthermore, the study reveals that investment in training and development develop employees in their current jobs, prepares them for tomorrow's opportunities and responsibilities and at the same time, transfers information and knowledge into practice with a view to enhancing organization usefulness and productivity. As a result of these findings, the study concludes that adequate manpower development in universities designed with a clear mission and vision, and well-articulated policy, and strategic plan, will improve the performance of personnel in achieving organizational set goals beyond COVID 19 epoch. Based on this, the study recommends that since personnel are highly esteemed resource of organization, employers of labour should be conscious about training and development and the retention of employees. Finally, every organization should have personnel that can adjust swiftly in unpredictable business environments to achieve set goals for the increase of productivity and growth of the economy.