Spanish dock workers have called nine days of strikes, threatening to disrupt trade for up to three weeks from March 6.
The nine days of stoppages across dozens of Spanish ports would take place on alternative days, meaning disruptions could drag on for three weeks between March 6 and March 24.
Last week dockers called off a planned three-day strike after the government said it would put its reforms on hold and open talks, but the decision to push ahead with a bigger strike came after the government signalled it would not change parts of the plan.