Holidaymakers in Mallorca, Ibiza and Menorca face chaos this summer with a wave of mass strikes set to go ahead involving hotel staff.
The walkout by holiday staff on the Balearic Islands are due to take place during the the peak June and July holiday season and will cause major disruption for tourists.
This summer's disruption was planned after the workers' union, UGT, says no progress has been made over their demands for better pay and conditions.
There is also a reported raft of specifically anti-tourist action planned, including occupying beaches and super-gluing apartment locks -as locals protest over "overtourism".
UGT union has warned tourists to the popular British holiday hotspots will be seriously impacted if the action goes ahead.
Unless a last-ditch deal is struck, there will be a mass walk-out on June 6 followed by several days of strike action in July.
They have urged hotels to do everything within their power to prevent it.
Thousands of hotel workers - including restaurant and bar staff - have already walked out earlier this year on May 1.
There is still a massive gulf between the two sides' position on pay rises.
The union wants wages to rise by 19 per cent across the three years to 2027, while employers are offering 8.5 percent, less than half the pay rise demanded by workers.
With little sign of an agreement being reached, union chiefs decided on Wednesday to begin mobilising strike plans.
A rally is scheduled for the end of June at the Platja de Palma.
Another protest in the Palmanova-Magaluf area is set to be added, so that workers'anger will be visible in the main tourist centre in the Bay of Palma.
The most major disruption will come in July, according to island newspaper Diario de Mallorca.
A UGT official said: "If we don't see the possibility of an agreement in principle, we will call a strike lasting several days."