Managers working in government parastatal generally in Nigeria tend to have lukewarm attitude towards performing their managerial functions or tasks and any other engagements involving them compared to managers in the private organization which are highly competitive. This negative work attitude affects the effectiveness and efficiency of the organizations in terms of achieving higher productivity. Managers at times are often faced with lack of effective and good working environment, also the lack of the necessary infrastructure and other necessary arrangements by the management can bring about poor job performance. Lack of job performance can be affected by job stress; lack of training; poor work environment; job security and organizational culture. However, the role of managers in organizational goal attainment should not be underestimated. Through critical observation it has been noticed that government parastatals still have little or no regard to the welfare and development of their managers. It is the backdrop that has led to this work on problems affecting manager’s job performance in government parastatals: a study of Cross River State Water Board.