Assessing the Performance of Voluntary Environmental Programs: Does Certification Matter?

Abstract

The promotion of voluntary environmental programs (VEPs) as alternative approaches to traditional environmental regulation has fueled numerous researchers to evaluate VEP performance. However, these studies have focused on assessing the environmental performance of a single VEP. As yet, we know little about the overall environmental benefits of these programs. Moreover, questions remain about whether VEPs designed with different monitoring regimes—related to whether programs are self‐monitored or undergo external certification—vary in their ability to improve environmental conditions. Using meta‐analysis methodology, this article evaluates the aggregated environmental outcomes of U.S. VEPs drawing on data from nine studies and over 30,000 firms. We show that collectively VEP participants do not improve their environmental performance over nonparticipants. Rather, nonparticipants improve their environmental performance by 7.7 percent more than VEP participants. Additionally, nonparticipants improve the environment 24 percent more than participants in self‐monitored VEPs, whereas participants in International Standards Organization 14001as a groupexhibit inconclusive environmental performance improvements.

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