Key Factors Affecting the Efficiency and Achievement of Labor Productivity in Some Public Construction Projects in Jordan

Over some years, many public projects in Jordan have experienced delays due to an inappropriate initial work management plan. The performance of labor in construction projects is affected by many factors and has a direct interrelationship with the triple constraint of the project time, cost, and scope. This study aims to analyze the factors affecting labor productivity in some public projects in Jordan, labors achievements and motivation. To achieve the purpose of the study a questionnaire was developed to observe the impact of critical factors on labor productivity and the traffic intersections: Al-Ersal /Al-Hurryah intersection and Marj Al-Hamam intersection project was selected to be the study sample. The data from the questionnaire were statistically analyzed using the (SPSS) program, to analyze the data collected from the survey, this study used the method of Relative Importance Index (RII) to measure the impact of the critical factors affecting labor productivity. From the analysis of 32 Factors that were identified from literature review affecting the labor productivity, it is concluded that the top ten factors affecting labor productivity in The Traffic Intersections in Amman: Al-Ersal /Al-Hurryah Intersection and Marj Al-Hamam Intersection Project are as follows: (1) Payment delays to labor, (2) Material Shortage, (3) Tools and equipment shortage, and Low wages in the same rank, (4) Allocate tasks to labors fairly and according to specialization, (5) Job Security, (6) Deficiency of motivation, (7) Labor absenteeism, (8) Incompetence of site supervisor, (9) Poor communication of supervisor with labors, (10) Lack of labor skilled and experience.