READ MORE: What is Bill 101?
Partenaires pour un Québec français says the government is failing in its mission to adequately defend the language.
Its members, who include prominent labour leaders as well as the head of the main artists’ union, says not enough is being done to ensure the law is being applied in its entirety.
The bill was adopted on Aug. 26, 1977, by René Lévesque’s Parti Québécois government, which had swept to power the previous November.
WATCH BELOW: Language debate in Quebec
It forces immigrants to attend French-language school and places limits on the use of languages other than French on commercial signs.
The legislation is widely cited as a major reason so many English-speaking Quebecers left the province in the latter half of the 1970s.