Staff authority is exercised by a man over line personnel. The relationship between on the line manager with whom he works depends in part on the staff duties. In a management, staff refers to those elements of the organization which help the line to work most effectively in accomplishing the primary objectives of the enterprise, the nature of the staff relationship is advisory. The function of staff is to investigate research and give advice to line managers. Staff personnel’s having specialized knowledge and skills reduce the burden of line personnel’s. Staff managers have right to direct or command subordinate who are working under him. But with respect to line personnel, they play an advisory role of recommending and assisting. An advisory staff manager provides advice, assistance and information and it depends on the line manager whether these are put into action or not. Staff specialists may be allowed the time to think, to gather data, and to analyze the data when the line personnel are very busy in managing operations.