Construction projects heavily depend on efficient human resource utilization. Decreased productivity is a common issue, leading to project delays and increased costs. This study aims to analyze labor productivity in the installation of Reinforced Concrete Pipe (RCP) drainage in Green River View (GRV) Tanjung Bunga. This research employed a six-day field observation. Productivity data was analyzed using the Labor Utilization Rating (LUR) method to measure time efficiency, supplemented by interviews to identify qualitative factors. The average LUR was 53.20%, categorized as fairly efficient. Productivity fluctuated daily, influenced by factors such as weather, worker tardiness, differences in work tools, smoking habits, team coordination, and supervision quality. The work group with high discipline and modern tools showed the highest LUR. LUR proved to be an effective indicator for measuring work efficiency and management performance. This study recommends improving time management, standardizing tools, and enhancing supervision to boost overall project productivity.
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