Abstract: The buzzing world of sustainability has led to soaring growth of literature on green marketing, green accounting, green retailing, green supply chain management and green general management. Green Human Resource Management (GHRM) studies on how this field contributes to preserving the environment is hardly found. The polarization between "Best fit" and best practice in HRM make difficult to measure human resource management output. Drawing on the classical Ability Motivation Opportunity (AMO) framework emphasizing the necessity of employees to possess abilities, motivation and be given opportunity to perform, Structural Equation Modelling (SEM) is used to spot the terrain for further study on green human resources management as an innovation in Malaysian setting. As most innovations are related to product development, this study highlights GHRM practices as a process innovation in responding to the current trend shifting from pro-economic to pro-social then pro-environment. This way, under the AMO concept, this study scrutinizes the necessity to initiate GHRM practices in manufacturing companies of Malaysia as a process innovation by integrating people, process, technology and the organization. Finally, the model is expected to support the recent National Green Policy.