Abstract
In this chapter, it is proposed that the shared mental models theory provides a theoretical foundation to explain the importance of lean construction implementation for total manpower reduction in precast construction. This is because the literature on lean construction and the literature on shared mental models theory have an overlapping interest in improving team performance which corresponds to the main emphasis of this research on reducing manpower effort in precast construction by eliminating construction wastes that does not deliver value. Through this application, this research anchors the conceptual model development to underpin the tenets of enabling lean in precast construction, rather than a discussion of how shared mental models theory applies to each lean principle.