基于社会认知理论，通过对305名建筑工人的多时点问卷调查和实证分析，构建了企业-工会耦合关系对建筑工人安全行为的研究模型，探究了企业-工会耦合关系对建筑工人安全行为影响的作用机制和边界条件。研究结果发现：企业-工会耦合关系正向影响建筑工人安全行为，事故风险易发性感知和事故风险严重性感知在其中发挥中介作用。班组安全氛围不仅正向调节了企业-工会耦合关系对事故风险易发性感知和事故风险严重性感知的影响，还进一步增强了企业-工会耦合关系通过事故风险易发性感知和事故风险严重性感知影响建筑工人安全行为的间接效应。

Drawing on social cognitive theory and employing a multi-wave questionnaire survey and empirical analysis with data from 305 construction workers, this study establishes a research model to examine the impact of the enterprise-union coupling relationship on construction workers’ safety behavior, while exploring the underlying mechanisms and boundary conditions of this influence. The findings reveal that the enterprise-union coupling relationship positively influences construction workers’ safety behavior, with perceived accident risk probability and perceived accident risk severity serving as mediating factors. Moreover, team safety climate not only positively moderates the effects of the enterprise-union coupling relationship on perceived accident risk probability and perceived accident risk severity, but also further strengthens the indirect effects of the enterprise-union coupling relationship on construction workers’ safety behavior through these two dimensions of risk perception.