Police estimates suggest that between 100,000 to 150,000 participants are expected across the country for the May Day demonstrations, reflecting widespread discontent.

Sophie Binet, leader of the CGT union, emphasized the need for a strong response, including calls for the nationalization of ArcelorMittal, in light of significant job losses affecting multiple factories.

Union leaders from CGT and CFDT are advocating for nationalization of the company to protect jobs and maintain industrial activity amid the layoffs.

Olivier Faure, head of the Socialist Party, plans to visit Dunkerque with leaders from other left-wing parties to discuss protective measures against Chinese steel imports and potential state intervention.

Boris Vallaud, leader of the Socialist Party deputies, proposed a bill to place the ArcelorMittal site in Dunkerque under state control due to the company's failure to meet commitments regarding job security.

The protests coincided with government support for a controversial bill allowing certain sectors to work on May 1, traditionally a public holiday in France, which has faced resistance from labor leaders.

Key cities, including Rennes and Lyon, are under heightened surveillance due to the presence of far-left groups, as authorities prepare for potential unrest during the demonstrations.

In Metz, employees from ArcelorMittal Florange joined protests against job cuts, expressing frustration over government spending priorities that favor military budgets over social services.

CGT Secretary Sophie Binet criticized the lack of focus on social issues amidst discussions on war, debt, and immigration over recent months, highlighting the urgent need for attention to labor concerns.

A delegation from La France insoumise, including economic affairs commission president Aurélie Trouvé, emphasized the need for government action to protect the Dunkerque site.

On May 1, 2025, hundreds gathered in Dunkerque to protest against ArcelorMittal's plan to cut approximately 600 jobs in northern and eastern France, primarily affecting Dunkerque.

The company's plans involve eliminating 636 positions in France while transferring 1,400 roles to India, which has drawn widespread criticism from labor leaders.