Do environmental policy statements accurately represent corporate commitment to environmental sustainability? Because companies are not required by law to publish environmental policy statements or to verify that these statements are true using independent third parties, external stakeholders often wonder when a published commitment to a policy translates into actual policy implementation. The authors analyzed two independent databases to predict the circumstances under which large, leading-edge corporations in industry sectors will commit to and/or implement proactive corporate environmental policies and when it (...) is unlikely they will do so. The authors found that commitment to specific environmental policies does not vary greatly between industry sectors; however, policy implementation does. (shrink)