Constructive dismissal in Portugal: how to prove it (Art. 394 Labour Code)

Why this matters

In Portugal, the Labour Code calls this figure resolução com justa causa pelo trabalhador — what English speakers usually call constructive dismissal, though the literal translation is "resignation with just cause".

Art. 394 lets you walk out when the employer fails badly enough that staying becomes unreasonable. Art. 396 then gives you compensation of 15 to 45 days per year of service, with a 3-month minimum.

On paper, it is one of the strongest protections an employee has under Portuguese law.

In real life, most cases die on a single line in the judgment: "not proven".

The email was missing. The witness pulled out. The demand letter never went. The person was right — but walked out without building the case. When the employer challenged it in court, it was their word against the company's. The result: indemnity wiped, exit reclassified as a plain resignation, and in some cases an order to pay damages for the missing notice (Art. 401).

This guide stops that from happening. You leave with everything in place.

The three elements you must prove

For a court to accept your just cause, you have to show three things at the same time:

Drop one of the three and just cause collapses. That is why so many cases lose: the worker proves the fact but cannot prove fault or impossibility.

Good news: the law tilts the field in several scenarios, either flipping the burden of proof or presuming elements in your favour.

Who proves what (burden of proof)

General rule: whoever claims, proves. You claim just cause, you prove it.

There are 5 major exceptions where the law helps you:

1. Wages unpaid for more than 60 days (Art. 394 no. 5)

Fault is presumed. You only have to prove that the wages were not paid (payslips, bank statements, no transfer received). The employer has to prove the failure was not at their fault — and almost never can.

This is the most solid rule in the Portuguese Labour Code. Past 60 days, the worker's position is practically untouchable.

2. Discrimination (Art. 25 no. 5)

If you claim you were treated unfavourably for a protected reason (sex, age, race, pregnancy, illness, prior ACT complaint), it is enough to present serious and consistent indicia. The employer must prove the real reason was something else.

Applies to resignation when the unilateral change of conditions is discriminatory.

3. Harassment (Art. 29 + Art. 25 no. 5)

Same burden flip. Serious indicia are enough — then the employer has to show the behaviour was not harassing or that protective measures were taken.

See the detailed evidence playbook in Workplace bullying in Portugal — what counts.

4. Workplace accident or occupational disease

For Art. 394 no. 2 (d) (offences to physical or moral integrity), Law 98/2009 creates presumptions of causation when illness arises in connection with work.

5. Late payment of wages in general

Even before the 60 days, you only need to prove the delay. The employer has to show a non-attributable cause (declared insolvency, force majeure). Arguments like "cash flow trouble" do not cut it.

What to prove in each scenario

Each ground in Art. 394 has its own evidence map. Here is what courts expect to see for each one.

Unpaid wages (Art. 394 no. 2 (a) and no. 5)

What to prove: the wages did not arrive on the due date, and for how long.

Base evidence:

• Payslips for the months concerned (often issued even when unpaid).
• Bank statements showing no transfer from the employer.
• Employment contract with the normal pay date.

Strong evidence:

• Demand letter sent by registered post (Art. 323) and the CTT registration receipt.
• Any reply from the company.
• Message exchanges with HR, managers, supervisors.

Untouchable trigger: crossing the 60-day mark (Art. 394 no. 5).

If you are still building the case, read the pillar Unpaid wages: what to do and use the Late wage interest calculator to total what is owed.

Wilful breach of legal or contractual rights (Art. 394 no. 2 (b))

This covers things like unpaid overtime, withheld Christmas or holiday allowances, breach of the applicable collective agreement (CCT), refused holidays, illegal deductions.

What to prove:

• A copy of the contract and/or applicable CCT (DGERT publishes them).
• A comparison between what should have been paid and what you received (payslips).
• Written communication where the company denies the right.
• Your formal requests for correction.

Abusive disciplinary sanction (Art. 394 no. 2 (c))

The company opens disciplinary proceedings to punish you for exercising rights (strike, complaint, ACT report).

What to prove:

• The timeline: your legitimate act, followed shortly by proceedings.
• The content of the proceedings (charge letter, decision).
• The real reason versus the stated reason.
• Retaliation as a pattern (Art. 331 — 12-month presumption).

Wilful failure to provide safety and health conditions (Art. 394 no. 2 (d))

Covers physical and moral offences as well as dangerous environments left uncorrected.

What to prove:

• Your written alerts (emails to management, occupational health service).
• Reports from the safety committee.
• Medical reports linking the condition to work.
• Even an anonymous complaint filed with ACT.

Wilful damage to serious financial interests (Art. 394 no. 2 (e))

Applies when the company causes you material loss (unpaid travel, retained personal tools, illegal lay-off).

What to prove: loss in euros, backed by documents.

Offences to physical or moral integrity, freedom, honour or dignity (Art. 394 no. 2 (f))

Includes moral and sexual harassment.

What to prove:

• A detailed chronology with date, place, episode, witnesses.
• Messages, emails, screenshots, lawful recordings.
• Psychiatric or psychology reports.
• Witnesses who saw the events or whom you told at the time.
• Prior internal complaint (mandatory whistleblower channel above 50 employees — Law 93/2021).

For step-by-step instructions, see Sexual harassment in Portugal: evidence and reporting and Workplace bullying in Portugal.

Substantial and durable change to working conditions (Art. 394 no. 3 (b))

Unilateral change of location, role, schedule or pay, without your agreement.

What to prove:

• Original contract with the previous conditions.
• The company's written notice imposing the change.
• Your written refusal.
• Concrete impact: extra commute time in hours, drop in pay in euros.

How to build the file — before you leave

This is where most people fail. They walk out, and only then start looking for evidence. By that time, access has been cut, colleagues are nervous, and the emails sit on the company's servers.

Do all of the following before you communicate your resignation:

1. Recover everything that exists in writing

• Forward to your personal email: contracts, payslips, relevant emails, manager communications.
• Screenshot internal messages (Slack, Teams, group WhatsApp).
• Photograph notices on the board, work rosters, internal regulations.

Limit: do not extract confidential company information unrelated to the case. Only what is necessary. Courts accept evidence obtained this way for your own case (consolidated case law).

2. Build a timeline

A simple sheet with 4 columns: date, episode, evidence available, witnesses.

Exact dates. One- or two-line description of the episode. Evidence: where the document is. Witnesses: name + contact.

This will be gold for your lawyer and for you when giving testimony.

3. Collect witness contacts

Colleagues, ex-colleagues, suppliers, clients. Before you leave. Afterwards it gets harder — they leave the company, change numbers, fear retaliation.

Tell them they may be called to testify. Ask if they agree. Note it down.

4. Send a formal written demand

For wages it is required (Art. 323) with an 8-day grace period. For other grounds, it is highly recommended.

The demand does three things:

• Sets a fixed date when the employer knew about the facts.
• Shows the court you tried to fix it.
• Starts the 30-day Art. 395 clock when the employer fails to respond.

Use our Demand letter for late wages or prepare an equivalent for your case.

5. See a doctor and put it on record

If your health is affected (anxiety, insomnia, depression), book an appointment. Ask for a medical report mentioning the work context. It does not prove cause at work, but it shows damage for the indemnity and any non-pecuniary damages.

6. File an ACT complaint if applicable

Even anonymously. It creates an institutional record of the problem before you leave. The complaint enters the company's history and can be requested by the court.

See how in How to file an ACT complaint in 10 minutes.

A worked example

Mariana is a physiotherapist in a private clinic. Permanent contract since 2020. Salary 1,350 € × 14 months.

In February 2026 the clinic stops paying. In March it pays half. In April nothing. May nothing.

Mariana does this:

14 March — sends a registered demand letter with delivery confirmation, requesting payment within 8 days. Keeps the CTT receipt.

22 March — no reply. Logs it in the file.

1 April — visits her family doctor reporting anxiety symptoms. Will be in the medical record.

15 April — speaks to 2 colleagues. Both confirm they are also unpaid and agree to testify.

5 May — past the 60-day mark from the February pay date. Art. 394 no. 5 activates. Fault presumed.

8 May — sends the resignation letter with just cause, based on Art. 394 no. 2 (a) and no. 5. Attaches: copy of the demand letter, payslips, statements, medical report.

15 May — files the request for Form RP-5044 with the clinic (essential for unemployment benefit).

She has 1 year to file the wage recovery court action (Art. 337).

Expected indemnity (Art. 396): 6 years × 30 days × 1,350 € ÷ 30 = 8,100 €. A 3-month minimum (4,050 €) is guaranteed. The court can raise it up to 45 days × year depending on severity.

Unemployment benefit: treated as involuntary (DL 220/2006). Right preserved.

Untouchable. Why? Because she has the file.

5 typical mistakes that destroy the case

1. Walking out without sending a demand first

The demand letter is the piece that proves to the court that you gave a chance. Without it, the employer argues "we were about to fix it" or "we did not know". Judges sometimes accept that.

2. Communicating the resignation by phone or in a meeting

Resignation must be in writing (Art. 395 no. 1). A meeting does not count. WhatsApp is accepted in practice but is fragile. The proper format is a registered letter with delivery confirmation, or hand delivery with a copy signed by HR.

3. Letting the 30 days lapse

Art. 395 no. 1: 30 calendar days from learning the facts. If the last episode happened on 1 March and you only resign on 5 April, the court may rule that the right to invoke that ground has lapsed — unless you can plead continuity (ongoing harassment, fresh late payment).

4. Telling colleagues everything before you leave

It creates noise. Witnesses get contaminated (they heard your version before testifying). The employer gets time to prepare a counter-case or to retaliate.

Exception: asking for contact details as a witness is fine. That is different from broadcasting the whole story.

5. Forgetting to request Form RP-5044 and the leaving documents

Art. 341 obliges the employer to issue a termination declaration and a work certificate. Without Form RP-5044 stating the reason, Social Security can block unemployment benefit.

Request it in writing at the moment of resignation. If the employer refuses, file with ACT.

A safe 5-step path

1. Gather evidence today — before doing anything else. Emails, payslips, messages, witness contacts. Keep them in a personal place.
2. Send a written demand — registered letter with delivery confirmation. 8-day deadline. Keep the receipt.
3. Wait the deadline, or cross 60 days if wages — do not resign in the heat of the moment. Let Art. 394 no. 5 work for you.
4. Resign in writing with just cause by registered letter — citing the exact article, with brief but precise grounds. Use our Just cause resignation template as a base.
5. Same day or right after — formally request Form RP-5044 + work certificate + termination declaration. Register at IEFP within 90 days.

What the court looks at if the employer challenges

If the employer chooses to challenge your resignation (Art. 387 no. 4 — 30 days after receiving your letter), the court assesses three things:

1. The facts — proven? to what extent?
2. Severity — do they justify immediate exit, or could other routes have been tried (warning, mediation)?
3. Your reaction — did you act within 30 days? did you send a demand?

The file you built answers all this in advance. If it is complete, the court follows you.

If it is patchy, the employer exploits the gaps.

That is why the line between winning and losing is not "being right" — it is having the file.

Next steps

Thinking about resigning and want to test how strong your case is?

• See the pillar Termination of employment in Portugal — the 5 routes to compare with the other exits (mutual agreement, plain resignation, etc.).
• Wages late? Start with the late wages pillar and the Late wage interest calculator.
• Already have grounds and want to estimate the figure? Use the Severance calculator (Art. 396 logic applies here too).
• Ready to send the letter? Just cause resignation template — adapt for any Art. 394 ground.
• Confused by the terminology? Constructive dismissal = resignation with just cause explains the gap between the English and Portuguese terms.