Article 39-D Federal Labor Law
TITLE TWO. Individual Employment Relationships · CHAPTER II. Duration of employment relationships
Current text · last reform published in the Official Gazette of the Federation (DOF) on 14 May 2026
The trial and initial training periods are non-extendable.
Within the same company or establishment, trial periods or initial training periods may not be applied to the same employee simultaneously or successively, nor on more than one occasion, nor in the case of distinct jobs, or of promotions, even when, once the employment relationship has concluded, another arises with the same employer, in order to guarantee the social security rights of the employee.