Nearly two dozen vessels were queued outside the French oil import terminal in Fos, southern France, on May 27, held up by a strike organized by the hardline CGT and FO unions over planned labor reforms.

A spokeswoman for the port of Marseille told Reuters that on May 25, 29 oil, LNG and chemicals vessels were waiting between the wharf and harbor.

On the morning of May 27, 21 vessels including 12 carrying oil, LNG or chemicals, were waiting. During normal busy operations, about five vessels would be waiting, the port authority said.

CGT port workers and dockers joined the nationwide rolling strike planned for May 26 and May 27. The stoppages hitting the power, fuel and transport sectors are aimed at forcing the government to withdraw the planned labor reform bill.

CGT oil refinery and oil depot workers at Fos-Lavera have been on strike since May 23 and have blocked oil terminals, preventing some fuel deliveries and leading to shortages.

The terminals supply PetroIneos Lavera, Total's La Mede and Exxon's Fos refineries on the southern coast.