The constraints due to the strike called by the trade union organizations representing the carrier's workers were announced this morning on the company's website, with the exception that the information is "subject to change at the last minute".

The service will return to normal from 06:30 on Wednesday (26 October).

In statements to the Lusa agency, Anabela Carvalheira, from the Federation of Transport and Communications Unions (FECTRANS), confirmed the 24-hour strike of ML workers for better working conditions and salary increases.

ML workers had already scheduled a strike for October 12, which was later called off because minimum services had been decreed, but the unions delivered a new strike notice for Tuesday, the 25th October.

The Lisbon Metro operates daily with four lines: Yellow (Rato-Odivelas), Green (Telheiras-Cais do Sodré), Blue (Reboleira-Santa Apolónia) and Red (Airport-São Sebastião).

Normally, the metro runs between 06:30 and 01:00.