This study examines whether and how internal communication at different levels (i.e., corporate symmetrical communication and supportive peer communication) interact to influence employee psychological well-being during the COVID-19 pandemic. This study also reveals the mediating effects of employee organizational trust in this process, which helps explain how internal communication influences employee psychological well-being. An online survey was conducted with 393 employees across various industries in the United States. The key findings showed that supportive peer communication was positively associated with employee mental wellness. In addition, increased organizational trust positively mediated the effects of both corporate symmetrical communication and supportive peer communication on employee psychological well-being. This study advances understanding of employee psychological well-being by examining the impact of internal communication. The results of this study also provide practical implications regarding how to promote employee psychological wellness by creating an effective internal communication environment at both corporate and peer levels to cultivate employee organizational trust.

本研究探讨了不同级别的内部沟通（即企业对称沟通和支持性同行沟通）是否以及如何相互作用以影响 COVID-19 大流行期间的员工心理健康。本研究还揭示了员工组织信任在这一过程中的中介作用，这有助于解释内部沟通如何影响员工心理健康。对美国各个行业的 393 名员工进行了在线调查。主要研究结果表明，支持性的同伴交流与员工的心理健康呈正相关。此外，增加的组织信任正向调节企业对称沟通和支持性同伴沟通对员工心理健康的影响。本研究通过检查内部沟通的影响来促进对员工心理健康的理解。本研究的结果还为如何通过在公司和同行层面创建有效的内部沟通环境以培养员工的组织信任来促进员工心理健康提供了实际意义。