The union at the centre of a protracted port strike in French Polynesia says it will toughen its action.
The dispute, which is entering its third week, is centered on workers' demands for more safety.
Goods have not been cleared to leave, with the Commerce Federation likening the stoppage to economic sabotage.
About 2,000 containers are now stacked in Papeete, waiting to be cleared amid estimates that the stoppage has caused more than two million US dollars a day in losses to the local economy.
The union says there is no more room for additional containers and ships arriving now cannot be offloaded.