Robbins (1997) defines managers as those who are all oversee the activities of other people with the purpose of accomplishing organizational goals. Therefore, in order to provide organizations with the best outcome, effective managers are urgently needed for modern organization. This is simply because, according to Hunsaker (2001), that the increasing recognition is given to the importance of having managers with strong interpersonal skills rather than, that twenty years ago, managers were only valued primarily for their technical know-how.

There is an endless list of skills that the managers should have in order to be effective, but the 4 basic skills that discussed by Robbins and Decenzo in their book are conceptual skills, interpersonal skills, technical skills (Katz 1974), and political skills (Pavett, Lau 1983). These skills will be discussed later in this essay together with their importance. Based on the above researches, a conclusion will be remarked in the end of...