Comprendre le métier d'intervenant institutionnel en SST : quelle analyse de l'activité pour les acteurs de terrain ?

The job of institutional practitioner in occupational healf and safety( OHS) is more complex than it appears to it. The ARP is an associative structure, arisen from a report of déficiency ( abstract and methodological) wich allows to think the intervention in OHS as an object of research. For that purpose, several research seminars were organized and it is time presently to confront their productions. The objective of this communication is to show the determining elements of the prevention intervention.. It aims also to show how the practices of the participants's can be enlightened with regard to the concepts of "sciences of work ". [ABSTRACT FROM AUTHOR]