The objective of this research is to examine the relationship between HR roles and HR role stressors in determining the effectiveness of HRM. Specifically, the purpose of the study is to examine the link between 1) the HR roles (administrative expert, employee champion change agent, and strategic partner) and HR role stressors (role ambiguity and role overload), as well as HRM effectiveness (strategic HRM effectiveness and technical HRM effectiveness) and 2) HR role stressors and HRM effectiveness. A massive primary survey was conducted which involved 153 line managers from Malaysian manufacturing companies. The data were analyzed through structural equation modelling (SEM) via Smart PLS. The significant findings of the study revealed that the roles of the change agent and strategic partner influence perceived HR role ambiguity while the employee champion role influenced HR role overload and all dimension of HR roles influence all dimensions of strategic HRM effectiveness. Moreover, the employee champion role and strategic partner role influenced technical HRM effectiveness and HR overload influenced technical HRM effectiveness.

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