Sud-PTT is a French trade union created in fall 1988 after the exclusion of more radical elements from the CFDT-PTT.
In 1988, when French socialist minister Paul Quiles decided to undertake a deep reform of the Post and Telecommunication Administration, the CFDT decided to support him and to exclude those who would not follow its political line.
Other reason for this exclusion: several CFDT unions from the Health and the Post and Telecommunications federations located in the Paris region supported wildcat strikes self-organised by the workers.
The expelled post and telecommunication unions decided to create a new federation, Solidaires, Unitaires et Democratiques (SUD, which also means the south in French).
SUD's success with the workers comes from its rank-and-file sensibility, and its commitment to sharing and renewing the leadership (cf.