Dinku, Abebe(Professor)Amanuel, Mekides2018-07-032023-11-112018-07-032023-11-112016http://etd.aau.edu.et/handle/12345678/5814The objective of the study is to overview the productivity measurement practices in the Ethiopian construction industry. It mainly aims to investigate and rank the critical factors affecting labor productivity in building construction projects according to the rate given by respondents and to compare the investigated critical factors affecting labor productivity in Ethiopia to that of other studies in different countries. Furthermore, it describes approaches suggested by construction practitioners to improve labour productivity on building projects. The study result indicates that the performances of building construction projects are influenced by the effect of poor labour productivity; however, most of the contractors do not have experience of measuring labour productivity on their projects due to negligence, lack of awareness and believing that measuring productivity is difficult to implement. Hence, contractors are recommended to participate in trainings and workshops to increase their knowledge and level of awareness. The top ten labour productivity influencing factors rated by their level of effect and frequency of occurrence are rated and ranked as; 1)Shortage of material, 2)Delays in decisions making, 3)Incomplete and Inaccurate drawings, 4) Lack of follow up the work progress, 5) Financial difficulties of the owner/Payment delay , 6)Incomplete facilities (water & power supply, and sanitary facilities), 7)Inspection and Instruction delay, 8)Lack of Motivation, 9)Frequent damage of equipments and 10)Change of work order/Variation. The result indicates that among the top ten ranked critical factors five (50%), four (40%) and 1 (10%) of them lies under the responsibility of Contractors, Consultants and Clients respectively. Results of the comparative analysis show that the findings of each study are different from the others. These differences indicate that the factors affecting construction productivity change based upon different circumstances. It is found that; timely supply of Material & Equipments, using work Plan (schedules) and Continuous monitoring of the progress of the project, Acquiring complete drawing & specification, Motivating labours, and Subcontracting works are labour improvement approaches suggested by the respondents in the rank of their effectiveness. Key words: Construction, Building, Productivity, Labour, Factors,enConstructionBuildingProductivityLabourFactorsThesis