The difficulties in moving towards corporate sustainability raise the question of how environmental and social management can be integrated better with economic business goals. Over the last decade, the relationship between environmental and economic performance, and more recently the interaction between sustainability performance and business competitiveness, have received considerable attention in both theory and practice. However, to date, only partial aspects of the relationship between sustainability performance, competitiveness and economic performance have been studied from a theoretical as well as an empirical perspective. And, to date, no unique relationship has prevailed in empirical studies. A number of explanations have been put forward to explain this, including methodological reasons, such as the lack of statistical data, the low quality of that data, or the fact that such data is often available for short time periods only. Other theoretical explanations have been developed, such as the influence of different corporate strategies or the relatively small influence of environmental or sustainability issues as one factor among many on the economic or financial success of firms. So, how should the business case for sustainability be managed?