Seven French ports are facing ongoing disruption after dockers voted to intensify their ongoing protests over the government's pensions reform plan.
On Tuesday 14 January the CGT union called for a 72-hour walk-out until Friday 17 January.
Services have been disrupted at Calais, Dunkirk, Le Havre, Rouen, Nantes-Saint-Nazaire, La Rochelle and Marseilles.
Ferry ports Le Havre and Marseilles were at a standstill.
The FNPD CGT ports and dockworkers' union said that it cannot accept the government's plan, which will mean working longer with reduced pensions arrangements.
In December, the CGT union called successfully for five 24-hour work stoppages with working to strict security rules from 30 December. The union asked the government to withdraw its pensions reform plan and for negotiations to formulate an updated plan based on union demands for the profession.
The FNPD said it is banning overtime working and special shifts. Working to rule abiding by the strictest security working provisions continues and more 24-hour strike are in the pipeline.