Dans ce document, on examine l'importance croissante des professions a forte concentration de connaissances, pour la periode de 1971 a 1996. On etudie egalement comment les diverses professions dont celles de gestionnaire, de professionnel et de technicien ont evolue selon la branche d'activite...

This paper examines the increasing importance of high-knowledge occupations over the period 1971 to 1996. It also examines changes that have occurred for different knowledge professions, including managers, professionals and technical occupations, by industry and by geographic area.