Airport workers have called a national strike at airports across the country during the Easter holiday.
The CCOO and USO unions, which contain the majority of Spanish airport workers, voted to strike for four days.
The walk-out will be on 12-13 and 16-17 April, coinciding with the beginning and the end of the holiday the busiest time of the year at Spanish airports.
The two unions represent 65 percent of the employees of Aena, the state-run management company which runs Spain's airports.
Strikers want Aena to grant them a new agreement which will guarantee current working conditions and pay at all airports.
The proposed strike does not at present have the support of Spain's biggest union, the UGT.
