This paper has the purpose of contributing to the discussion of the crossing areas between Environmental Health and Workers Health, in the Brazilian context of Labor, Production, Environment and Health. This paper emerges in the context of the current organizational changes of the Brazilian National Health System (SUS), with a major focus on Primary Health Care, having in mind, also, the preparation of the 1st National Environmental Health Conference (1 feminine CNSA) to be held in December of 2009. So, historical and conceptual aspects of those fields are described in a summarized manner, as well as some shared features and expected actions of the Health System, with emphasis to the role of Primary Health Care and to the importance of the dialogue with the social movement. Finally, some topics for a common agenda were identified by the authors.