Formal extension programs were started in Iran about fifty years ago. Nevertheless, the system Extension has not been brought about basic modifications and predominant reforms in the agricultural status of the country. Many factors are responsible for this situation. One of the more important factors is level of competence of extension employees. UNDP (1991) reported that ministry-based extension systems in developing countries, including Iran, do not have adequate financial resources to attract high quality and competent personnel and support basic operations. Consequently, extension staffs in these systems lack needed job competencies and motivation (Swanson, 1997). In this study an especial attention has been paid on competency of extension personnel, what they already have and what they should possess before and after recruitment.