How to avoid labor lawsuits: the file that wins cases before they exist

Mexican labor litigation runs on a rule every business owner should get tattooed: the burden of proof is on the employer. The worker asserts; you prove — the hours, the wage, the payments, the cause of dismissal. That is why labor lawsuits are not won at the hearing: they are won (or lost) in the file you built during the employment relationship.

The labor file: your only real defense

For every worker, without exception: an individual employment contract signed with position, working hours, wage and term under the LFT (the federal labor law) — a worker with no written contract enjoys a presumption in their favor on everything they claim; stamped payroll receipts (CFDIs) signed or with a valid digital seal — the payroll CFDI is today the decisive proof of payment; attendance records consistent with the agreed schedule — without them, whatever overtime the worker claims is taken as true; proof of vacation, aguinaldo (the mandatory Christmas bonus) and PTU (mandatory profit sharing) paid and signed; and administrative reports of every disciplinary incident, drawn up with witnesses, in real time — not reconstructed the week of the dismissal.

Termination: where 80% of cases are lost

A justified dismissal requires a cause under art. 47 of the LFT, a written notice of date and cause delivered to the worker or to the court — the omission of the notice, on its own, creates a presumption of unjustified dismissal. If the exit is negotiated, the finiquito or settlement agreement must be ratified before the Conciliation Center to acquire the status of res judicata; the paper signed in the office, without ratification, is successfully challenged every day. And the resignation must be in the worker's own handwriting, dated, with no identical pre-filled templates for the whole staff — handwriting experts exist and courts use them. Before deciding on any exit, run the full numbers — pro-rated amounts, seniority premium, severance — with the severance and final-pay calculator: negotiating knowing the exact range is half the strategy, and the complete cost map by type of exit is in the termination guide for employers.

The new landscape: mandatory conciliation and NOM-035

The labor-justice reform changed the game: almost every conflict now passes first through mandatory pre-trial conciliation before the Conciliation Centers — a fast stage where arriving prepared (with a file and a negotiation strategy) resolves most matters at a fraction of the cost of a trial. In parallel, NOM-035 (psychosocial risk factors) and the obligations on training and on health and safety stopped being red tape: noncompliance supplies the evidence for lawsuits and inspection fines. The business owner who complies and documents turns every obligation into one more piece of their defense.

The three red flags of this decade

Outsourcing: operating specialized services without REPSE (the specialized-services provider registry) or with disguised insourcing schemes drags along joint-and-several liability, non-deductibility and even criminal consequences — it is the most aggressively audited front since 2021. Poorly structured mixed wages: "low salary + bonuses off the books" schemes that in court are integrated in full into the base wage, multiplying the award. The heat-of-the-moment dismissal: the decision to terminate someone on the same day as the conflict, with no report, no notice and no strategy, is the most expensive way to settle a moment of anger.