The aim of this research is to ascertain whether a firm’s environmental motivations may help to predict how complete or incomplete its environmental management will be, understanding incomplete management to be that which neglects one or more of the three keys aspects of such management, namely, monitoring, action and results. We specifically posit that while motivations based on the search for legitimation lead to more incomplete styles of environmental management, competitive motivations entail a more complete management. The analyses conducted with (...) a sample of 1,902 plants provide empirical evidence in favour of such reasoning. The contribution this research makes, therefore, is not restricted solely to showing the effect motivations have on the environmental performance of organisations, as it also introduces a new dimension of environmental management—the degree of completeness, which needs to be considered when understanding and evaluating this effect. (shrink)