This research is co inducted with the objective of assessing the challenges, problems andrnachievements BPR as a public Administration and Management tool to enhance the servicernDelivery o{ public institutions as exemplified by the Ethiopia postal service with specificrnreference to {h e Addis Ababa General Post Office. The study employed descriptive surveyrnmethod. The analysis o{ the findings revealed that BPI? implementation enhances the servicerndelivery in terms of delivering quality service, flexibility and responsiveness and deliveringrncustomer sat is/action in GPO. However, lack of awareness, training, motivation, leadership andrntechnological inputs have hampered the change. To overcome these challenges and problems ,thernresearch has come up with recommendation where the organization should organize awarenessrncreation and consensus building meetings with employees especially those who are most affectedrnand disappointed by the change; providing work r elated continuous and rigorous training andrnorientation to both the employees and the management; the organ inaction must provide trainingrnand career enhancement as co unsealing and outplace mint assistance for those who arernmost affected by the placement, the leadership should monitor progress against the entirernand make regular communication o{ progress and success in achieving the targets, the entirernteam, th e leadership, the management and the employees should get together to review thernprogress against the objectives and the standard, continuous monitoring and evaluation m1lst hernregularly conducted and communicated to ail concerned units and individuals for furtherrnimprovement and growth. The organization should also undertake recruitment and procurementrnin order to overcome the shortage o{manpower and equipment and facilities respectively.