In a statement, the Federation of Transport and Communications Unions (FECTRANS) said that the workers of the road passenger transport company rejected the proposal presented by the Carris Board of Directors and decided on ways to fight during the month of September.

"The vast majority of workers considered the document resulting from the negotiations insufficient and demanded an effective reduction in working hours, clearly and unambiguously, regardless of the type and location of work, as well as the clarification and effective implementation of the commitments made on other matters," FECTRANS stated.

To this end, they decided to "carry out a cycle of struggles" in September, which includes a 24-hour strike on September 18th, with a new plenary meeting, and the refusal of all overtime work in the second and third weeks of that month.

In April, Carris reached an agreement with workers for a salary increase for 2025.

However, union leader Manuel Leal recalled, at the time, that the implementation of the 35-hour work week and the method of travel payments were still under discussion.

"If, in fact, there are no responses to these two central issues, the workers decided, at the last plenary meeting, to resume the struggle at the beginning of June," he said at the time.

Carris provides surface urban public passenger transportation services in the municipality of Lisbon and is managed by the Lisbon City Council.