Line managers have always been part of the human resources, and their involvement has been placed centre stage and a core element of human resources (Marchington, 2005). The rapid development of new organizational models changes expectations about line managers (Siugzdiniene 2008). Line managers continue to play a crucial role in how human resource strategies are being developed and implemented. Yet, it is not always easy to distinguish between Line Manager and HR Managers roles in various HRM models. The goal of this paper is to resolve the eternal Line Manager-HRM Manager dilemma and show how these two professions interact in a Soft and Hard HRM models. This paper does not merely define the concepts and scope of obligations but performs a detailed analysis of the controversies