This document discusses managing labor/manpower in construction projects. It discusses the importance of effective manpower management for achieving project goals on time and under budget. Labor productivity, which is output per labor hour, is a key factor. The document outlines several labor characteristics that can impact productivity, such as skills, initiative, dependability, and ability to work under pressure. It also discusses how project work conditions like job site accessibility, equipment usage, and climate can affect productivity. Finally, it emphasizes the importance of organizing work through prioritizing tasks, planning, delegating responsibilities, and making timely decisions.