Article 398 Federal Labor Law
TITLE SEVEN. Collective Employment Relationships · CHAPTER III. Collective employment contract
Current text · last reform published in the Official Gazette of the Federation (DOF) on 14 May 2026
In the revision of the collective employment contract the following rules shall be observed:
I.If it was entered into by a single labor union of employees or by a single employer, either of the parties may request its revision;
II.If it was entered into by several labor unions of employees, the revision shall be made provided that the applicants represent at least fifty-one percent of the totality of the members of the labor unions; and
III.If it was entered into by several employers, the revision shall be made provided that the applicants have at least fifty-one percent of the totality of the employees affected by the contract.