The implementation of performance evaluation in the civil service of Pakistan can be analyzed from environmental perspective', where a plethora of variables are influencing implementation process. The study delved deeply into the factors which may impede or facilitate the successful implementation of PE in the public sector organizations. The scope of the study includes 12 occupational groups. The qualitative case study is opted and detailed interview were conducted with the executive civil service from pay-scale 17 to 21. The study focused on: what are the background factors forced to introduce civil service reforms? How do various factors influence the implementation of performance evaluation reforms and to what extent do they determine the degree of its implementation? It is deductive study which is guided by two theories i.e. Van Meter and Van Horn (1975) and Dolowitz and Marsh (2000) and seven theoretical perspectives of organization are formulated: i) political onditions, ii) bureaucratic factors, ii) institutional factors, iv) policy standards and objectives, v) cultural perspectives, and vi) learning from transnational organizations.