Abstract：Traditional measures for managing workers' unsafe behavior are static, standardized methods that are only partially effective, which makes them difficult to use for managing dynamic unsafe behavior on site. Therefore, better methods are needed to assess the danger of unsafe behavior so as to take necessary countermeasures. This paper presents an assessment method for construction workers' unsafe behavior by introducing a danger coefficient. Firstly, various types of unsafe behavior are classified according to accident types and scenes. Then, the danger coefficients for various types of unsafe behavior are defined by combining the occurrence rate of an unsafe behavior, the possibility of various accidents caused by the behavior, and the consequences of the accidents. Resources can then be allocated to behavior management. A real case is given to show that this method can improve the effectiveness of unsafe behavior management to further improve construction site safety.
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