The aim of the article is to determine the impact of approaches, models, and strategies for competency management of logistics personnel adopted by the supply chain leader on the relationships between the entities forming the links of the chain. The article is divided into two parts. The first part contains theoretical considerations regarding the approach to competency management of logistics personnel adopted by the supply chain leader, in correlation with relationships within the supply chain. The second part presents the results of the author’s original survey research. The empirical research was conducted from June 2024 to September 2025 in ten supply chains operating across five industries: pharmaceutical, food, construction, automotive, and energy. In each of the industries, two purposefully selected supply chains were studied. In selecting metalogistics systems, the author was guided by the criterion of competency management implemented by the enterprise acting as the leader in the supply chain. The research was carried out using the author’s survey questionnaire divided into four parts concerning: supply chain relationships, logistics competencies of the supply chain, competencies of logistics personnel, and management of those competencies by the supply chain leader. The conclusions drawn from this study may be used not only for further empirical research on the impact of approaches to competency management on relationships within the supply chain, but also as recommendations for logistics managers.
Keywords: supply chain; logistics personnel; logistics competency; logistics competency management models; logistics competency management strategies