“…However, environmental and social issues often get excluded from productive processes, perhaps because of their high financial costs and the limited financial resources available to companies, especially small and medium-sized enterprises (SME) (Del Brio, Fernández & Junquera, 2001;Hillary, 2004;Nidumolu, Prahalad & Rangaswani, 2009). Another barrier to the implementation of environmental management systems (EMS) in particular relates to uncertainty that persists among practitioners about their real results (Hillary, 2004;Ravi & Shankar, 2005), such that many managers believe the costs of implementing EMS might be greater than the benefits they provide (González-Torre, Alvarez, Sarkis & Adenso-Díaz, 2010;Hassel, Nilsson & Nyquist, 2005;Walley & Whitehead, 1994).…”