A nationwide strike has severely disrupted schools and public transport across France.
Workers are angry at being forced to retire later or face reduced pensions.
Police, lawyers and hospital and airport staff are joining school and transport workers for a general walkout that could include millions of people.
France"s largest nationwide strike in years was agreed by unions unhappy with President Emmanuel Macron"s plans for a universal points-based pension system.
Authorities have been trying to put in place plans to mediate the disruption.
French newspaper Le Monde described Thursday as “the moment of truth for Macron” writing: “The next days are a decisive test for the head of state”.