"Due to the strike, significant disruptions are expected at a national level in all services, on May 16, 2022, with a possible impact on the days before and after the strike period", the company said in a statement.

CP also informed that customers who already have tickets purchased to travel on Alfa Pendular, Intercidades, Internacional, InterRegional and Regional trains may request a refund of the total ticket price or its revalidation.

The strike takes place between 00:00 and 24:00.