Employment Contract Termination Letter: How to Resign Without Costly Mistakes
Posted at 23/03/2026
Notice periods range from 15 to 60 days depending on contract type and seniority, and getting this wrong can cost up to a month’s salary. Resignation must be formally communicated with proof of receipt, as a simple email does not provide legal protection. While resigning without just cause excludes eligibility for unemployment benefits, employees remain entitled to unused vacation pay and proportional holiday and Christmas bonuses.
Resigning seems straightforward. In practice, most mistakes happen right here: a letter sent with the wrong date, a notice period miscalculated, a delivery made without any written proof. The consequence can be a financial penalty payable to your employer — or the loss of amounts you were legally entitled to receive.
This article covers everything you need to know before you put pen to paper.
Termination Letter, Resignation Letter or Dismissal Letter: What's the Difference?
In Portuguese employment practice, these terms are used interchangeably and refer to the same document: the written communication through which an employee informs the employer of their decision to end the employment contract. The Labour Code uses the technical term "denúncia do contrato de trabalho" — unilateral termination by the employee (Art. 400 of Law no. 7/2009).
The distinction is more about language than law. "Resignation letter" is the most common everyday term. "Termination letter" tends to be used when emphasising the formal, legal nature of the act. "Dismissal letter" is technically inaccurate when the initiative comes from the employee — dismissal, strictly speaking, implies a decision by the employer — but the term is so widespread that it remains in common use.
What Changes When There Is Just Cause
There is, however, one distinction that matters: resignation without just cause (the most common situation, where the employee simply decides to leave) versus resignation with just cause attributable to the employer (provided for under Art. 394 of the Labour Code), which applies when there is, for example, non-payment of salary, harassment or a serious breach of working conditions.
When an employee terminates with just cause, the contract can end immediately — no notice period is required. The written communication must be made within 30 days of becoming aware of the relevant facts. This is the exception, and it requires solid, documented grounds.
Before Writing the Letter: What to Consider
This is not about discouraging the decision. It is about making an informed one, because the financial consequences are real and immediate.
Checklist before writing the letter:
- Have you confirmed your contract type (permanent, fixed-term, open-ended fixed-purpose)?
- Have you calculated your exact length of service at the company?
- Have you checked the applicable notice period (see table below)?
- Have you reviewed your individual contract for any additional clauses?
- Do you have a new job confirmed, or sufficient financial reserves for the transition period?
- Are you aware that, without just cause, you are not entitled to unemployment benefits?
- Have you determined your intended end date based on the notice period?
This last point is where most employees go wrong. The notice period begins from the date the employer receives the letter not the date it was written or sent.
Notice Periods: The Table You Need to Keep
| Contract Type | Length of Service / Duration | Notice Period | Legal Reference |
|---|---|---|---|
| Permanent contract | Up to 2 years | 30 calendar days | Art. 400, no. 1, a) |
| Permanent contract | More than 2 years | 60 calendar days | Art. 400, no. 1, b) |
| Fixed-term contract | Contract under 6 months | 15 calendar days | Art. 400, no. 3 |
| Fixed-term contract | Contract of 6 months or more | 30 calendar days | Art. 400, no. 3 |
| Open-ended fixed-purpose contract | Less than 6 months elapsed | 15 calendar days | Art. 400, no. 4 |
| Open-ended fixed-purpose contract | 6 months or more elapsed | 30 calendar days | Art. 400, no. 4 |
| Management / director roles | Any | Up to 6 months (if stipulated in contract or CBA) | Art. 400, no. 2 |
Important note: notice periods are counted in calendar days, not working days. Weekends and public holidays count.
What Happens if You Do Not Serve Your Notice
The short answer: you may have to pay the company. Art. 401 of the Labour Code states that an employee who fails to serve their notice period, in full or in part, is liable to pay compensation equal to their base salary plus seniority increments for the missing period.
Worked example: Ana has a permanent contract and has been with the company for 3 years. Her base salary is €1,800 per month. She needs to leave in 15 days, but her required notice period is 60 days. She is short by 45 days. The compensation owed to the employer: (45 ÷ 30) × €1,800 = €2,700.
This amount can be deducted from her final settlement. In practice, many employers agree to shorter notice periods — but that agreement must be explicit and confirmed in writing.
How to Write the Letter: A Step-by-Step Structure
A termination letter does not need to be elaborate. It needs to be clear, complete and legally valid. These are the required elements:
| Element | Description | Required? |
|---|---|---|
| Sender identification | Full name, address, Citizen Card number | Yes |
| Recipient identification | Company name, address, HR Department | Yes |
| Location and date | Date the letter was written (relevant for calculating notice) | Yes |
| Subject line | "Termination of employment contract under Art. 400 of the Labour Code" | Yes |
| Statement of intent | Unambiguously communicate the decision to resign and the end date | Yes |
| Reference to notice period | Confirm that the legal notice period is being observed | Yes |
| Request for notice waiver | If you wish to leave before the notice period ends | Optional |
| Expression of thanks | Acknowledge the professional opportunity | Optional (recommended) |
| Handwritten signature | Without notarial authentication, you can revoke within 7 days | Yes |
Stating the reason for leaving is not legally required when resigning without just cause. Simply communicating the decision clearly is sufficient. If just cause is invoked, detailed justification is mandatory.
6 Ready-to-Use Templates
Template 1 — Permanent Contract (Less Than 2 Years' Service)
[Full name], holder of Citizen Card no. [___],
residing at [full address], employee of [company name] since [start date], hereby gives notice of termination of the employment contract, pursuant to Art. 400, no. 1, a) of the Portuguese Labour Code, with effect from [end date], being the date that corresponds to the full 30-day notice period I am legally required to observe.
I hereby request that all outstanding employment credits be settled on the date of termination, including accrued and unused holiday, holiday allowance and proportional Christmas bonus.
I would like to thank the company for the professional opportunities provided and wish the team every success going forward.
[Location], [date]
Kind regards,
[Signature] [Full name]
Template 2 — Permanent Contract (More Than 2 Years' Service)
[Full name], [...],
hereby gives notice of termination of the employment contract, pursuant to Art. 400, no. 1, b) of the Portuguese Labour Code, with effect from [end date], being the date that corresponds to the full 60-day notice period legally required.
I hereby request settlement of all outstanding employment credits, including accrued and unused holiday, holiday allowance and proportional Christmas bonus.
[Location], [date]
Kind regards,
[Signature] [Full name]
Template 3 — Fixed-Term Contract (Duration Under 6 Months)
[Full name], [...],
hereby gives notice of termination of the fixed-term employment contract entered into on [date], pursuant to Art. 400, no. 3 of the Portuguese Labour Code, with effect from [end date], corresponding to the 15-day notice period.
[Location], [date]
Kind regards,
[Signature] [Full name]
Template 4 — Fixed-Term Contract (Duration of 6 Months or More)
[Full name], [...],
hereby gives notice of termination of the fixed-term employment contract entered into on [date], pursuant to Art. 400, no. 3 of the Portuguese Labour Code, with effect from [end date], corresponding to the 30-day notice period.
[Location], [date]
Kind regards,
[Signature] [Full name]
Template 5 — Resignation with Request to Waive Notice Period
[Full name], [...],
hereby gives notice of termination of the employment contract with immediate effect from [date], and requests that the company waive the legally required notice period by mutual agreement between both parties.
Please confirm your acceptance of this waiver in writing.
[Location], [date]
Kind regards,
[Signature] [Full name]
Template 6 — Termination with Just Cause (Employee-Initiated)
[Full name], [...],
pursuant to Art. 394, no. [X] of the Portuguese Labour Code, hereby communicates the immediate termination of the employment contract with just cause attributable to the employer, with effect from the date of receipt of this communication.
The just cause is based on the following facts: [objective, dated description of the facts]. These facts constitute [a serious breach / non-compliance / ...] of the employer's legal and contractual obligations.
All outstanding employment credits are hereby reserved, including any statutory compensation.
[Location], [date]
Kind regards,
[Signature] [Full name]
We strongly recommend seeking specialist legal advice before sending a just cause termination letter.
How to Deliver the Letter Validly
A written letter is not enough on its own. Your legal protection depends on proof of delivery. There are three acceptable methods:
1. Registered post with acknowledgement of receipt — the safest option. It creates a formal record of sending and receipt. The notice period begins from the confirmed receipt date.
2. In-person delivery — effective, provided the company signs and dates a copy as "received". Never hand it over without obtaining that signed acknowledgement.
3. Email with read receipt — acceptable, but with limitations. A plain email without a read receipt does not constitute sufficient proof. If you use this method, request explicit written confirmation of receipt.
The most common mistake we see in resignation processes: the employee sends the letter by email, the company does not respond, and disputes arise later over when the notice period actually started. Registered post with acknowledgement of receipt eliminates this risk entirely.
The Final Settlement: What You Are Owed
Even when the resignation is employee-initiated without just cause, the company is legally required to pay all employment credits accrued up to the termination date.
| Employment Credit | Description | Conditions |
|---|---|---|
| Current month's salary | Pro-rata salary for the final partial month worked | Always owed |
| Accrued unused holiday | Accumulated holiday days not yet taken | Always owed |
| Proportional holiday allowance | Share of the holiday allowance for the current year | Always owed |
| Proportional Christmas bonus | Share of the 13th month for the period worked in the year | Always owed |
| Unemployment benefit | Social Security payment | Not owed (except in just cause or mutual termination cases) |
| Severance pay | Compensation for years of service | Not owed in employee-initiated resignation without just cause |
Worked example: João has been with a company since March 2022, on a base salary of €2,200. He terminates on 31 July 2026 and has 12 unused holiday days.
- Unused holiday: (12 ÷ 22 working days per month) × €2,200 = ±€1,200
- Proportional holiday allowance (7 months ÷ 12 months) × €2,200 = ±€1,283
- Proportional Christmas bonus (7 months ÷ 12 months) × €2,200 = ±€1,283
Total credits to receive in the final settlement, on top of the month's salary: approximately €3,766. This amount does not disappear because of the resignation — it is guaranteed by law.
After the contract ends, notify Social Security of the change in employment status within 5 working days of the termination date.
Handover and Documents to Receive
During the notice period, prepare the handover of your responsibilities. Document ongoing tasks, key contacts and the status of active projects. It is a professional gesture that protects your reputation — and directly influences the references you will receive in the future.
The company is required to provide you, at the point of termination, with a salary declaration for Social Security purposes and a work certificate stating your start and end dates and the functions performed. If these are not provided, you are entitled to request them formally.
Frequently Asked Questions About the Termination Letter
Can I resign without serving any notice period?
Only in two situations: with just cause attributable to the employer (Art. 394 Labour Code) or if you hold official victim-of-domestic-violence status (Art. 400, no. 6 Labour Code). In any other case, failing to serve notice results in financial liability to the employer.
When does the notice period start?
From the day the employer receives the letter — not the date it was written or sent. This is exactly why registered post with acknowledgement of receipt matters: it establishes the receipt date without any ambiguity.
Can I use holiday days to cover my notice period?
Yes, but only with the employer's agreement. If they agree, you can take holiday during the notice period and leave earlier. If they do not, you must serve the full notice period and receive payment for unused holiday days in the final settlement.
Am I entitled to unemployment benefit if I resign?
As a general rule, no. Unemployment benefit is designed for involuntary unemployment. Resignation without just cause does not qualify. The exceptions are termination with just cause attributable to the employer, or mutual termination agreements that specifically include the right to unemployment benefit.
Can I change my mind and withdraw the resignation?
Yes, under one specific condition. If the letter was not signed with notarial authentication, you can revoke the resignation within 7 days of the employer receiving it (Art. 397, no. 4 of the Labour Code). The revocation must be communicated in writing. If the signature was notarially authenticated, this right to revoke does not apply.
Is the date on the letter the same as the termination date?
No. The date on the letter is when it was written. The termination date is calculated from the date the employer receives it, adding the applicable notice period. They are two distinct dates.
Mistakes That Cost Money or Your Professional Reputation
The most common errors we see in resignation processes:
- Not keeping a copy of the letter sent. Always retain a signed copy with the date and delivery method recorded.
- Calculating the notice period in working days. It is calendar days. Counting only weekdays can shorten your actual notice period by several days.
- Sending by email without confirmation. An email does not carry the same evidentiary weight as a registered letter. If you choose email, obtain written confirmation of receipt.
- Including complaints or grievances in the letter. A termination letter is not the place to settle scores with the company. Doing so can damage future references and, in extreme cases, create legal disputes.
- Not requesting your work certificate. Many employees leave without asking for this document. It is relevant for future job applications and for Social Security purposes.
- Not reviewing confidentiality or non-compete clauses. Some contracts include clauses that remain in effect after termination. Read your contract before you leave.
A Professional Exit Protects Your Future
The decision to leave has been made. What remains is to execute the process properly: a clear letter, delivery with proof of receipt, a correctly calculated notice period, a well-managed handover and a final settlement verified in detail.
At Fed Finance, we regularly support candidates through career transitions. Our position is clear: a well-managed exit is as important to your professional reputation as a strong job application. The finance and accounting market in Portugal is a small world — people cross paths again.
If you are currently considering a new professional opportunity, explore our finance and accounting job offers or register as a candidate to be contacted by one of our consultants.
Useful Resources and Official Documents
- Termination Compensation Calculator — ACT (Labour Authority)
- Portuguese Labour Code (Consolidated) — Diário da República
- Social Security Portugal — Change of Employment Status
Sources
- Law no. 7/2009, of 12 February (Portuguese Labour Code) — Articles 394, 397, 400 and 401
- ACT — Autoridade para as Condições do Trabalho, portal.act.gov.pt
- Diário da República Eletrónico, diariodarepublica.pt
- Santander Salto — "Aviso prévio: prazos, regras e o que acontece se não cumprir", February 2026
- Doutor Finanças — "Cessação de contrato: As 8 modalidades e regras do Código do Trabalho"
