This article responds to demands for a more in-depth study on how to implement an environmental policy strategy (EPS). Following the strategic choice framework, this study seeks to address this issue by testing a theoretical model of several managerial and organisational variables associated with a firm's EPS. The managerial variables examined include managers' perceptions of environmental pressures, managers' consciousness of environmental problems, and managers' perceptions of the potential benefits associated with the implementation of an EPS. The organisational variables that are investigated relate to the structure, systems, and processes of the representative organisations. Control variables include the firm's industrial sector, its country of origin, its size, and its international character. A model based on structural equations with the weighted least squares estimation method is used to test the hypotheses in a large sample of firms. The results confirm the need to consider a multidisciplinary view of the implementation of an EPS.