Overall, the authors argue that High Sustainability company policies reflect the underlying culture of the organization, where environmental and social performance, in addition to financial performance, are important, but these policies also forge a strong culture by making explicit the values and beliefs that underlie the mission of the organization. Key concepts include:

Organizations voluntarily adopting environmental and social policies represent a fundamentally distinct type of modern corporation, characterized by a governance structure that takes into account the environmental and social performance of the company, in addition to financial performance, a long-term approach towards maximizing inter-temporal profits, and an active stakeholder management process.
Societal concern about sustainability, at both the level of the firm and society as a whole, has been growing from almost nothing in the early 1990s to rapidly increasing awareness in the early 2000s, to being a dominant theme today.
The High Sustainability firms in this study pay attention to their relationships with stakeholders-such as employees, customers, and NGOs representing civil society-through active processes of engagement.
The Low Sustainability firms, by contrast, correspond to the traditional model of corporate profit maximization in which social and environmental issues are predominantly regarded as externalities created by firm actions which only need to be addressed if required to do so by law and regulation.
The group of firms with a strong sustainability culture is significantly more likely to assign responsibility to its board of directors for sustainability and to form a separate board committee for sustainability. Moreover, High Sustainability companies are more likely to make executive compensation a function of environmental, social, and external perception (e.g., customer satisfaction) metrics.