Micro and macro level analysis of labor productivity

In this paper a study has been made using a simple productivity measurement system used to measure the productivity of the major activities in a construction project. In this measurement system productivity data is collected for the activities such as formwork, rebar, concreting, masonry, plastering and painting activities. The micro level study of the activities is performed by Time-Motion study. Later X bar control chart was used to analyze the deviation in the daily labor productivity of the repetitive construction process, so as to arrive at the actual productivity values of the construction activities which serve as a basis to forecast the progress of work. This paper analyzes the labor productivity data of external painting activity only. The objective of the study was to study the variation in the daily productivity values to arrive at the actual productivity value by eliminating the values which fall out of the control limits.