Productivity is one of the important determinants of success in the construction in However, unlike production in the manufacturing industry, production in construction is labor driven.Thus, it is very important to employ high productive labor/personnel, for the successful completion of construction projects. This paper thus focuses on determination of critical factors that both affect productivity of construction managers/ engineers and increase their productivity. Job analysis together with systems approach was utilized, in order to establish the details, methods and environmental factors that affect the productivity of construction managers/ engineers. Job analysis forms which would help personnel department to both analyze the productivity of construction engineers and select high productive engineers was also modeled.