It has been a great task for an organization to be experiencing problem in staff development because it has influenced on the performance of employee towards producing of such organization. In order to curb the ugly situation, the solution is workers job security, on the job training, good working conditions, job design and prompt payment of salaries and wages. This research work is son the impact of staff development programme on the performance of employee in an organization with a specific reference to Longman Nigeria plc, Lagos. The aim of this study is to improve the quality of Job performance and to prepare employees for greater organizational responsibilities. And organization will find it difficult to achieve its organizational goals, if it fails to recognize the staff programme. In this research work, the use of questionnaire and direct observations are employed in gathering the needed information from the workers. The data are presented in different tables using percentages where analyzed and the hypothesis tested and recommendation are given. It is therefore optimistic that the reader of this work be able to know the impact of staff development progranmme on organizational productivity.