The aim of this article, on the me hand, is to look into the pertinenc
e of a number of debates or theories dealing with the transformation o
f the organization of ''professional services'' based on the notion of
industrialization. On the other hand. it is to envisage the rationali
zation of these services and the way they are organized according to t
heir particular modalities which generally speaking, date back a while
and no longer correspond to today's views on industrialization. As a
consequence, this text opposes two opposite forms of modernization der
ived respectively from industrial rationalization and professional rat
ionalization.