Four years after the launch of Mexico’s labour justice reform, legitimation votes on all existing collective bargaining agreements (CBAs) were to be completed by May 1, 2023. Mexico’s labour authorities extended that deadline to July 31, while requiring that unions register the dates of such votes by May 1. If legitimation votes have not been carried out or programed by May 1, or are programed but are not held before July 31, the CBA is terminated.