On construction sites, many tasks are performed concurrently in a specific working space. If this space is limited or inadequate, congestion will occurs and may affect labor productivity. This study concerns about three primary aspects: cooperation between subcontractors whose works are concurrent, productivity loss due to space constraints and the possible way to allocate space as a traded resource. First, a cooperative game model will be developed for efficient and beneficial use of available space in construction projects with different subcontractors. After that a case study will illustrate how this model performs. Result from the proposed model show that by sharing overlapped space, subcontractors could reduce cost and the benefit utilized from cooperation will be fairly distributed to each subcontractor using the concept of cooperative Game Theory.

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