The purpose of this paper is to explore factors that have an impact on information technology (IT) specialists' concealment of knowledge from their supervisors. A survey questionnaire was used to collect data from 118 IT specialists from a large Polish software company. The data analyses were conducted using partial least-squares path modelling. The results revealed that perceived work overload (PWO) is positively related to perceived job insecurity (PJI), and that PJI is positively related to vertical knowledge withholding (VKW). Contrary to expectations, no significant relation was found between PWO and VKW. Moreover, there is a negative relationship between supervisor support (SS) and VKW. This study introduces the concept of VKW and places it in the context of the relationship between subordinates and superiors. Managers can use the results to limit knowledge withholding among IT specialists. To confirm achieved results, future research can use larger samples and be conducted in different sectors.

本文的目的是探讨影响信息技术 (IT) 专家对其主管隐瞒知识的因素。使用调查问卷从波兰一家大型软件公司的 118 名 IT 专家那里收集数据。使用偏最小二乘路径建模进行数据分析。结果表明，感知工作超载（PWO）与感知工作不安全感（PJI）呈正相关，而 PJI 与垂直知识保留（VKW）呈正相关。与预期相反，PWO 和 VKW 之间没有发现显着关系。此外，主管支持 (SS) 与 VKW 之间存在负相关关系。本研究引入了 VKW 的概念，并将其置于下属和上级关系的背景下。管理人员可以使用结果来限制 IT 专家之间的知识隐瞒。为了确认取得的成果，未来的研究可以使用更大的样本并在不同的部门进行。