Credits: Paule Bodilis / Wikimedia Commons — CC BY 2.0.
Tens of thousands of people marched on Thursday, September 18, 2025, across France, at the call of a broad interunion coalition, to protest the 2026 budget bill and its €43.8 billion in savings. Blockades began at daybreak, and demonstrations filled the afternoon. Between competing figures and contained incidents, the government promises dialogue, while the unions are testing the balance of power.
What We Know
The day of September 18, 2025 brought together a broad interunion coalition of CFDT, CGT, UNSA, FO, CFE-CGC, CFTC, Solidaires, FSU around one demand: oppose a 2026 budget bill calling for €43.8 billion in savings. Organizers denounce “brutal measures” and an austerity logic. The government points to the need to restore the public finances.
The interunion coalition set the pace for the day, with marches in most major cities, blockades beginning as early as 6:00 a.m. in Normandy, and an interministerial crisis unit tracking the rallies at the Interior Ministry. In the evening, the official tallies came in: 309 arrests, 134 people in custody, 26 police officers and gendarmes injured, 10 protesters injured.
A Wide Mobilization, From Paris to Major Regional Cities
The marches swept through Paris, Marseille, Lyon, Toulouse, Rennes, Nantes, Caen, Rouen, Le Havre, Cherbourg, Alençon and many others. In Paris, turnout peaked at 55,000 people according to counts recorded at the end of the day. Other examples dotted the country: 15,000 in Marseille, 18,000 in Toulouse, 10,200 in Caen according to the prefecture. In overseas France, Martinique experienced notable disruptions, including acts of sabotage on the water network.
As the hours passed, the pace of the demonstrations varied: starts late in the morning, peaks in early afternoon, and sometimes late dispersals. The effects of the strike were felt in transportation, hospitals, universities, and health-related businesses. However, the situation did not lead to a general shutdown.
The Battle Over the Numbers
As often happens, participation figures differ depending on the source. The CGT puts the number at 1 million people in the streets. The Ministry settles on 506,000. The gap fuels controversy, nationally and locally. In Caen, for example, the prefecture counts 10,200 participants, while other local estimates suggest a broader range. This statistical battle is not just a ritual: it serves as a guide for the next rounds.
Beyond the totals, the geography of the marches reflects a diffuse but uneven anger. The metropolitan areas supplied most of the crowd, while mid-sized cities showed varying levels of density. The interunion coalition claims an overall success. However, the government points to a mobilization that was “contained” compared with previous social movements.
Incidents, Policing, and Official Tally
The authorities reported localized incidents, before a gradual return toward the end of the strike in the evening: pallet fires, isolated incursions including one in Caen, and sporadic clashes in Paris, Lyon, Rennes, Marseille. Policing combined escorting the marches and dispersing mobile groups. In addition, tear gas was used in limited areas. Early in the evening, Bruno Retailleau, the outgoing Interior Minister, presented a consolidated security report, stressing the return to calm in most areas.
The interministerial crisis unit tracked developments into the night. The authorities stress the need for caution when minors are involved, as some were arrested during the day. The unions offer a different view: these incidents would account for only a small share of the marches.
Students, Pharmacies, Energy: The Front Lines
The day also took the form of sector-specific actions. In education, student unions Union étudiante and SNES-FSU claim the mobilization of 110,000 students and report 23 high schools blocked over the course of the day. Pharmacy representatives USPO and FSPF report 18,000 pharmacies closed, a closure presented as exceptional in both scale and coordination. In the healthcare field, the FFMKR (massage therapists/physiotherapists) joined the demands.
On the power grid, EDF recorded a 4,000 MW drop in load, equivalent to four nuclear reactors. A rare signal that measures, better than a slogan, the reality of a strike when it affects strategic sectors.
What the Unions Are Challenging
At the heart of the mobilization is the 2026 budget bill and its €43.8 billion in savings. The interunion coalition says these cuts are incompatible with the state of public services and the level of wages. Education, hospitals, justice: the grievances converge. The unions denounce an austerity logic and call for more ambitious tax fairness to fund priorities. They also warn against “brutal measures” that would weaken younger people and low-income households.
In the marches, banners were mixed with slogans about purchasing power, youth, and the ecological transition. The student organizations made sure to place education front and center. They also point to budget strains already visible in universities and high schools.
The Executive Branch’s Position and Matignon’s Room to Maneuver
Faced with the streets, the executive branch emphasizes one imperative: cut spending to preserve the country’s financial credibility. Sébastien Lecornu, Prime Minister, has opened a dialogue with the unions and intermediary bodies. The stated goal: explain the budget path, spell out upcoming trade-offs, and identify possible support measures.
In the political equation, Matignon’s room to maneuver remains narrow. While technical adjustments are possible, the overall path of making €43.8 billion in savings in 2026 is the red line the executive branch has set. The first budget milestones outlined by François Bayrou, the former Prime Minister, provide a framework, but nothing is set in stone: Parliament and the macroeconomic calendar could still alter the course.
The question remains the method. Will the government sequence the efforts, target the savings, spread out the measures? The next social appointments will show whether a compromise is possible and at what political cost.
The Numbers, Blind Spots in a Bigger Debate
The focus on turnout totals has one virtue: it takes the pulse of a moment. It also has a blind spot: the quality of the signals. Slowing or growth in certain cities matters just as much. In addition, the engagement of key sectors is crucial. Public support or indifference also matters. In Normandy, the blockades at daybreak made an impression. Elsewhere, daily life absorbed the strike without major disruption.
This day comes in a context of budget pressure and high social expectations. It is a reminder that accounting decisions always have a concrete impact: fewer buses, larger classes, delays in justice, hospitals under strain. It is on this tangible ground that acceptance or rejection of the reforms to come will play out.
What Now? Toward a Strike-Ending Deal or a New Social Sequence?
The sequence opened on September 18 will not stop there: new strike notices are being considered if signals from Matignon do not shift. Consultations are announced in several ministries to spell out, program by program, the effort required in 2026.
Three questions dominate the coming days: will the executive branch agree to adjust some savings? Will the unions seek an agreement on targeted areas—low wages, students, hospitals? And will public opinion swing one way or the other as the first decisions are made?
Key Takeaways
A major mobilization swept across the country, without a general shutdown, but with key sectors in step. The figures remain disputed, with 1 million according to the CGT and 506,000 according to the Ministry. However, the incidents remained contained. In addition, the budget issue remains unresolved. The coming days will show whether the dialogue outlined by Sébastien Lecornu can ease the pressure or whether a new social sequence should be expected in the fall.