Quality management, environmental management and firm performance: A review of empirical studies and issues of integration

Quality management (QM) and environmental management (EM) are two business practices that may affect firm performance. These practices are being increasingly introduced into firms, which often use them jointly owing to their similarities. As a result of these similarities, their integration has become a popular topic of research and practice. In the field of integration, the highest level of integration may be achieved by means of a single, full QM–EM system (QEM) in which QM and EM lose their independence. It is therefore desirable to identify dimensions from which to assess these management practices and their effects on performance. The aim of this paper is to carry out a literature review in order to propose and analyse dimensions for QM, EM, QEM and firm performance, as well as models of cause–effect relationships between these variables. The topics reviewed are the following: (1) the QM and EM dimensions; (2) the empirical studies about QM–performance and EM–performance links; and (3) issues of integration. The review suggests that the large body of QM research may inform EM and QEM. This is so because research on the QM side is more advanced and developed than that on the EM side.