信息技术的高速发展带来了一系列的“隐形加班”现象,在电商行业尤为明显。本文以电商企业的员工为研究对象,在资源保存理论的基础上构建了非工作时间电子沟通、角色超载与领导有效性评价的关系模型。研究发现,非工作时间电子沟通能够显著正向影响角色超载,且领导有效性评价在此过程中具有负向调节作用。因此,电商企业的管理者应当建立有效的沟通机制,为员工提供必要的资源与心理支持,提升领导者的管理能力,从而减轻员工的角色超载感。The rapid development of information technology has brought about a series of “invisible overtime” phenomenon, especially in the e-commerce industry. This paper takes the employees of e-commerce enterprises as the research object, and constructs the relationship model of electronic communication during non-work time, role overload and leadership effectiveness evaluation on the basis of resource conservation theory. It was found that electronic communication during non-work time can significantly and positively influence role overload and that leadership effectiveness ratings negatively moderated this process. Therefore, managers of e-commerce enterprises should establish an effective communication mechanism, provide employees with necessary resources and psychological support, and improve the management ability of leaders, so as to alleviate the employees’ sense of role overload.