Short answer. Generally no. Article 281 caps probationary employment at six months from the date you started working, with an exception only for an apprenticeship agreement stipulating a longer period. And an employee allowed to work after the probationary period is considered a regular employee.
What the law says
Probationary employment shall not exceed six (6) months from the date the employee started working, unless it is covered by an apprenticeship agreement stipulating a longer period.
Labor Code, Article 281 — Probationary Employment. Read the full provision →
What the law says
An employee who is allowed to work after a probationary period shall be considered a regular employee.
Labor Code, Article 281 — Probationary Employment. Read the full provision →
The ceiling and its single stated exception
Article 281 opens with a limit, not a default: Probationary employment shall not exceed six (6) months from the date the employee started working, unless it is covered by an apprenticeship agreement stipulating a longer period. The only longer period the article itself contemplates is one under an apprenticeship agreement. So an extension to a year, announced because the company wants more time to assess you or because a manager was on leave when your review fell due, is not what the provision allows. Six months is measured from the day you actually started, not from the date printed on a contract signed later.
What happens when the period runs out
The last sentence of the article makes the consequence automatic: An employee who is allowed to work after a probationary period shall be considered a regular employee. No letter, ceremony or approval is needed. If you were still working on the day after the six months closed, the status changed by force of the article. That is why an employer who lets the deadline pass and then purports to extend probation is not preserving a probationary status — it is proposing to reduce one that has already vested.
Why employers still ask, and what agreeing costs you
Extensions are usually presented as a favour: another chance rather than a failed evaluation. It is worth seeing the trade clearly. Signing an extension is being asked to give up the protection the article has already conferred, on the strength of a promise about a later assessment. Consent given after the fact does not restore a probationary period the statute has closed, and a worker who signs is not thereby estopped from pointing to the date work actually began. If you are handed such a document, take the time to read it and note the date you received it.
What to check about your own dates
Find the day you first reported for work and count six months forward — pre-employment orientation, training days and a period spent on the payroll of an agency before being absorbed are all worth accounting for. Keep the appointment letter, your first payslip, your identification card and any onboarding email, because these fix the start date better than memory. Then note whether you kept working past the end of the period, and on whose instruction, since the article turns on that simple fact.