Employees are the major assets of any organization. Every organizations needs well trained employees to perform the activities effectively and efficiently. It is the continuous process of the organizations that helps to develop skills, knowledge, and abilities. Training and development leads the better performance of employees and general productivity of an organization. In this globalization era, training and development is crucial for the competent and challenging business. It is the nerve that needs to help enhancing the quality of work life of employees and development of the organization. Training and development is the crucial factors of enlightening the employee performance in most organizations. The purpose of the study is to examine the impact of training and development on organizational productivity. The population of the study is 200 staff of Mobile Telephone Network Enugu State. There was no need for sampling since the population is manageable. The study adopted survey research design. Structured questionnaire was used as instrument for data collection. Two experts from department of Public administration of Ebonyi State University, Abakaliki validated the instrument. It was further subjected to reliability test using Cronbach alpha statistic which yielded overall reliability coefficient of 0.82. Descriptive statistics of mean and standard deviation were used to answer the research questions. The t-test for non-correlated data was used to test the hypotheses at 0.05 level of significance. The data analysis was carried out with the help of statistical package for social sciences (SPSS) software. The results revealed that Training and development increases employee’s-confidence on different tasks, helps employees to do things right, facilitates accurate decision-making in tasks assigned to employees, increases employees’ job satisfaction, enables employees to cope with pressure, provides employees with capacity, enables employees to handle unexpected circumstances in the company effectively, lack of staff motivation, poor choice and design of training method, Poor attitude of staff, lack of training experts, poor management attitude towards training and Lack of motivation plan affects training and development of employees in Mobile Telephone Network in Enugu State.