CONTI Labor Lawyers
Unilateral Changes · Art. 66 LCT

They Changed My Schedule, Duties or Category: What to Do and How to Claim

Ius variandi is your employer's power to organize the job: change your schedule, your duties, or how you work, without asking your permission. But Article 66 of the Employment Contract Law (LCT) sets three strict limits on that power. If the change is unreasonable, touches something essential in your contract, or causes you harm, it's abusive — and you can demand it be reversed, refuse it, or treat yourself as dismissed with the right to full severance.

The Three Limits of Ius Variandi (Art. 66 LCT)

  • 1. Functional reasonableness: the change must answer a genuine need of the business — organization, output, technology — not a whim or a disguised punishment against you.
  • 2. No change to what's essential: your category, your pay, and the core of your schedule and duties can't be touched. Only secondary or incidental aspects can be modified.
  • 3. No material or moral harm: if the change causes you financial loss (lower pay, higher costs) or affects your personal life, your health, or your standing, it isn't valid even if the company claims a justification.

The legal limits of Article 66 LCT after the 2026 reform

Argentina's Labor Modernization Law 27,802 (Official Gazette, March 6, 2026) rewrote Article 66 of the LCT and changed a central part of this rule. Before, the statute itself required the change to be reasonable and to cause no material or moral harm. The current text only names two conditions expressly: no change to the essential terms of the contract, and no material harm. Reasonableness and moral harm dropped out of the literal wording.

That doesn't mean they stopped mattering. Specialized legal scholarship — and, foreseeably, the labor courts — holds that both limits remain in force, because they flow from Articles 62, 63 and 65 of the LCT (good faith and the functional exercise of management powers) and from Article 14 bis of the National Constitution, which protects dignified and equitable working conditions. In practice, your lawyer will still examine all three angles: whether the change answers a real operational need, whether it touches something essential in your contract, and whether it causes you material or moral harm.

Reasonableness is measured by the company's need, not its convenience. A shift change to cover a new client is reasonable; the same change applied only to you, right after you filed a complaint or came back from leave, starts to look like retaliation. The law also bars using ius variandi as a disguised sanction — that's what formal disciplinary measures are for, not a "reorganization" of your position.

What's essential in your contract — what your employer can't touch even with a good reason — is your professional category, your pay, and the core schedule you were hired for. What can be modified are secondary aspects: how your team is put together, the tools you use, minor adjustments to your schedule, or a reshuffling of duties within your same category.

Material harm is any direct or indirect financial loss: a disguised pay cut, the loss of a bonus, a significant rise in your expenses. Moral harm — today upheld through general principles rather than the literal text — is what affects your personal life, your health, or your standing within the company: a schedule incompatible with caring for your children, a duty that strips you of standing in front of your team, a change that isolates you.

When is a change reasonable, and when is it abusive?

A reasonable change is not the same as an abusive one. The company can reorganize shifts, reassign duties within your category, or rotate staff between areas without any of that giving rise to a claim — it's the ordinary exercise of its management powers (Articles 64 and 65 LCT). You have to tolerate it, even if it's inconvenient.

An abusive change is different: it crosses one of the three limits in Article 66. Typical examples: a demotion dressed up as a "reorganization," a shift change that systematically keeps you from caring for your children with no proven operational need, or a reassignment of duties that empties your position of real content to pressure you into quitting.

Abusive ius variandi is also not the same as a constructive dismissal grounded in some other breach. If your employer demands you repay something you don't owe, harasses you, or stops paying your salary, that's a plain contractual breach — you don't need to analyze reasonableness or essential terms, proving the breach is enough. The Article 66 analysis applies specifically when the company exercised a power it does have in principle — organizing the job — but went beyond its limits.

Don't confuse ius variandi with a change you agreed to. If you sign off on a change of category, schedule, or duties by mutual agreement — with a real trade-off, not just "keeping your job" as the consideration — that's a valid contractual novation, not ius variandi. Ius variandi is, by definition, unilateral: the company decides it without your consent.

Types of change: schedule, duties and category

Article 66 LCT covers any change to the form or terms of how you perform your job. The three most common fronts in practice are schedule, duties, and category. If what changed was your place of work — a transfer to another branch, plant, or city — that situation has its own rules, covered in detail in Abusive Workplace Relocation. Here we focus on the other three.

Schedule changes

The company can reorganize shifts, move your start time earlier or later, or redistribute your workday within legal limits — that's incidental and valid in principle. It becomes abusive when you're moved from a day shift to a night shift with no real operational need, when the new schedule is incompatible with caring for young children or a declared second job, or when the change is meant to pressure you into quitting.

Changes to duties or role

You can be assigned different duties within your same professional category without that being abusive ius variandi — adapting to how the business runs is normal. The line is crossed when the new duties strip you of standing in front of your team, empty your position of real content — leaving you without actual functions — or demand a very different skill set than the one you had, even if you formally keep the same category title.

Category changes

A demotion almost always touches an essential element of the contract: your category defines your pay, your duties, and your standing. That's why a demotion — no matter what the company calls it, a "reorganization" or a "reassignment of duties" — rarely survives the Article 66 test, unless a collective bargaining agreement or a specific agreement allows it. A promotion, by contrast, is not a problem: the limit protects against harmful changes, not against improvements.

How to file a claim, step by step

Since the Law 27,802 reform, the statute requires a step that legal scholarship already recommended before but that is now an express requirement in the text: before treating yourself as dismissed, you have to formally demand that your employer reverse the change. If you treat yourself as dismissed right away, without demanding it first, you risk a finding that you acted without sufficient cause.

The demand is sent through a free labor telegram (Law 23,789) or a notarized letter (carta documento). It has to precisely identify what was changed, since when, why you consider it abusive — point to the specific Article 66 limit that was crossed — and what concrete harm it causes you. Expressly ask that the prior conditions be restored within a specific, reasonable term — typically a few business days — adjusted to how urgent and complex your case is.

If the company doesn't respond, keeps the change in place, or answers evasively — in other words, if the demand goes unanswered — only then can you treat yourself as dismissed through the employer's exclusive fault (constructive dismissal) and claim full severance under Article 245 LCT, plus notice pay and integration of the dismissal month, exactly as in a dismissal without cause.

If you'd rather keep your job and just get the change reversed, talk to your lawyer before taking any step. Until the 2026 reform, the law provided for a fast-track court action — an injunction against innovating — asking a judge to order the company to keep the prior conditions while the underlying claim was decided. The new wording of Article 66 removed that path from the express text of the statute, and it's now a matter of scholarly debate: some legal scholarship holds it can still be pursued under general principles, but there's no legal guarantee or settled case law confirming that under the new text. Weigh with your lawyer whether your case still warrants trying it, along with other tools like withholding your labor — a legally contested area that, without proper advice, can be read as job abandonment.

If the company doesn't pay the severance after a constructive dismissal, the next step is mandatory SECLO conciliation and, if there's no settlement, a labor lawsuit before the Buenos Aires labor courts. Keep everything: telegrams, pay stubs, screenshots of how the change was communicated, messages or emails from your boss. That evidence is what later supports the claim.

Common mistakes when claiming ius variandi abuse

These are the mistakes that cost an employee the most when claiming over an abusive change:

Did they change your schedule, duties or category without notice?

Don't accept a harmful change in silence. Reach out and we'll review your case at no cost. Maipú 42, 9th Floor, CABA.

Frequently asked questions about ius variandi

Can my employer change my schedule without notice?

They can reorganize shifts based on business needs, but they have to respect the three limits in Article 66 LCT. If the new schedule is incompatible with your personal life or aims to harm you, you can demand it be reversed or treat yourself as dismissed.

Is it legal to demote me without an explanation?

Almost never. Category is an essential element of the contract, so a demotion — whatever the company calls it — usually crosses the limits of ius variandi and supports your claim.

What if my duties change but my pay stays the same?

Pay isn't the only limit. If the new duties strip you of standing, empty your position of real content, or demand a different skill set, the change can be abusive even without a pay cut.

Do I have to keep performing the new duties while I claim?

Generally yes, unless you consult your lawyer about a well-founded withholding of labor. Stopping work on your own, without advice, can be read as job abandonment.

How long do I have to send a demand over an abusive change?

There's no fixed legal deadline, but the sooner you demand it, the stronger your claim. Letting several months go by without reacting can be read as accepting the change.

What if I keep working under the new conditions for months?

It can be read as tacit consent, which seriously weakens a later claim. That's why you should demand a reversal as soon as the change happens, not once you're tired of tolerating it.

Can I refuse the change and keep showing up for work?

You can demand that the prior conditions be restored and keep performing your duties while the claim is resolved, unless the change is serious enough to warrant evaluating a withholding of labor with your lawyer.

Is a change from a morning to a night shift always abusive?

Not always. If it answers a real business need and doesn't harm you disproportionately, it can be valid. It becomes abusive when there's no operational justification or it causes you concrete harm.

What severance am I entitled to if I treat myself as dismissed over this?

The same as in a dismissal without cause: seniority severance (Art. 245 LCT), notice pay, and integration of the dismissal month, plus items like unused vacation and prorated SAC (the mandatory year-end bonus).

Can I still ask a judge to stop the change without resigning?

That's a point under debate since the 2026 reform: the law no longer provides for that action expressly in Article 66. Discuss your specific case with a lawyer before deciding on strategy.

Can I claim if the change affects a whole department, not just me?

Yes, though a general change applied to an entire department or workplace is usually harder to challenge on reasonableness grounds than one aimed only at you. Either way, it still has to respect the limits on essential terms and harm.

Related Resources

Call 11 2604–4758