None of the workers' trade unions were pleased with the new labour bill, but out of the 5 main confederations in France only the CGT (first trade union) was calling for a day of protests. The CFDT—usually goverments' main partner for reforms—said it was "worried and disappointed" by the new bill, but didn't join the demonstration. FO's direction changed its strategy (they were part of the contestation last year) and decided to be a "partner" this time, most likely to have some leverage to negotiate for future reforms about pensions or unemployment insurance... but the base didn't like at all this sellout attitude from their top bureaucrat, and more than half of the departmental unions + several big federations followed the CGT yesterday.
Tomorrow, the Prime minister will apparently debate on TV with Mélenchon.
The CGT scheduled another strike day next week, the 21. This time, all universities should have reopened, so maybe more students will join.
Mélenchon's movement has also scheduled a "march against Macron's social coup" in Paris two days after, the 23.
Renewable strikes are scheduled by transport federations from the 25 onwards, possibly with blockades on refineries.