Examining the moderating role of HIHRP in the relationship between external integration and productivity

Based on the human resource (HR) and supply chain integration (SCI) literature, this paper aims to argue that high-involvement human resource practices (HIHRP) work as a complementary capability for SCI, and thus, HIHRP moderates the relationship between SCI and firm productivity. This moderating role is analyzed through the following HIHRP dimensions, namely, ability-enhancing, motivation-enhancing and opportunity-enhancing practices framework.

Using empirical data collected from a survey of the agri-food sector (horticultural firms of southern Spain), the moderating effects of HIHRP on the relationship between supply chain external integrations (with customers and suppliers) and productivity are examined. Hierarchical regression analysis is used to test the proposed hypotheses.

The results support that HIHRP has a moderating effect on the SCI/productivity relationship. However, these results are only significant in the case of supplier integration.

This study analyzes HIHRP as a complementary asset in the context of SCI and makes both theoretical and managerial contributions to the SCI literature by empirically analyzing the role of HR practices in enhancing the relationship between SCI and performance.