Article 821 Federal Labor Law
TITLE FOURTEEN. Labor Procedural Law · CHAPTER XII. On Evidence · Section Five. On the Expert
Current text · last reform published in the Official Gazette of the Federation (DOF) on 14 May 2026
The expert evidence shall only be admissible when to prove a controverted fact knowledge is required in the science, art, profession, technique, trade, or industry in question, and in general when the matters by their nature are not known by the Court.