Construction industry plays an important role in the economic growth of country and resources productivity is an important economic indicator that is closely linked to economic growth, competitiveness, and living standards. The success of a construction project relies on the administration of various resources like labors, materials, tools and equipments and capital. Labor force is the most complex one to handle among the below mentioned resources. Hence, it is necessary to determine the factors influencing resource productivity. The main aim of this study is to determine the dominating factors affecting resource productivity and how to overcome those factors. The technique used in this research is application of Relative Importance Index (RII). It is a technique that is used to rank the different factors that result in reduced resource productivity and cause delay in construction projects. In this method the various factors which are being listed are rated on the scale of 1 to 5 depending on the basis of their impact on the construction project. Higher the value of RII, more important is that factor affecting on resource productivity.