This paper, which is part of a larger study of industrial accidents under the paradigm of the ecological psychology, analyses the impact of the physical environment on the accident rates of a working setting of the foundry industry. People’s work environment are considered as holistic entities following Barker’s (1968) concept of the behaviour setting. Occupational accidents are conceptualised as consequences of the behaviour-milieu non-synomorphy. Results show the importance of some aspects of the working ecological context on the occurrence of industrial accidents. The contribution of this study to its theoretical background and to the safety field is discussed.