Past research indicates that leader humor can bring many positive outcomes; however, its influence on employee voice has been largely neglected. We propose that leader humor can influence employee voice behaviors (i.e., promotive and prohibitive) via the mediating role of psychological safety. Drawing upon the substitutes for leadership theory, we further propose that team humor could moderate the influence of leader humor. Based on the latent moderated mediation structural equation modeling analysis, we found that employees whose leaders used humor more frequently perceived higher levels of psychological safety and in turn engaged in more promotive and prohibitive voice behaviors. Moreover, the indirect effects of leader humor were found to be more pronounced when teams have a low level of humor. On the other hand, leader humor has less influence on employee voice when teams have a high level of humor, which provides support for the leadership substitutes argument. Theoretical and practical implications are discussed.

过去的研究表明，领导者的幽默可以带来许多积极的结果；然而，它对员工声音的影响在很大程度上被忽视了。我们认为，领导幽默可以通过心理安全的中介作用影响员工的建言行为（即促进和禁止）。借鉴领导理论的替代品，我们进一步提出团队幽默可以调节领导幽默的影响。基于潜在调节中介结构方程模型分析，我们发现领导者使用幽默越频繁的员工感知到更高的心理安全水平，进而参与更多的促进和禁止的声音行为。此外，当团队幽默水平较低时，领导者幽默的间接影响更为明显。另一方面，当团队具有高水平的幽默时，领导幽默对员工声音的影响较小，这为领导替代论点提供了支持。讨论了理论和实践意义。