TRAIN union CC.OO. has announced two additional strikes for December 21 and January 7.
There was an existing train strike planned for this Friday 14, which at present is still set to go ahead.
Renfe and Adif announced in a press release this morning (Tuesday), the main reason for the industrial action is not having enough staff to cover train routes during the busy Christmas season.
The union CC.OO. also announced big plans to restructure the work force of both companies to address the imbalance of genders, currently there are only 13 per cent of women represented in each company.
The last train strike took place on October 31 and saw one third of all Renfe services being cancelled across Spain.
However, it is not known at this time what level of disruption will occur during the latest strike action.