Your boss calls you into a meeting room and puts a resignation letter, already typed, in front of you. "Sign now and you leave quietly. Don't, and you're fired today." Many employees sign out of fear for their record or their last pay, and only afterwards think about what they have done.
This guide answers one narrow question: what can you still do after signing, and which evidence separates "resigned by choice" from "pushed out". For your general rights on dismissal, read Dismissed from work: your rights. For how severance is calculated, see Severance pay on termination. If the employer then hands you another settlement paper, see Labour settlement agreements: what to check before signing.
The short answer
A resignation letter that the employee signed and that reached the employer is normally treated as the employee ending the contract, so no severance is due under Section 118. But if you can show that the employer decided to end the employment and used the letter as a form, the facts may be treated as a dismissal, and you may claim severance, pay in lieu of notice and compensation for unfair dismissal. Separately, if the signing was caused by duress meeting the civil-law test, the letter may be voidable.
Legal basis Section 118 of the Labour Protection Act B.E. 2541 gives severance to an employee who is "dismissed", scaled by service. Sections 17 and 17/1 deal with advance notice and pay in lieu of notice. Section 49 of the Labour Court Establishment and Procedure Act B.E. 2522 lets the court order compensation, or reinstatement, for unfair dismissal. On the civil-law side, Sections 164 to 166 of the Civil and Commercial Code deal with a declaration made under duress, and Section 181 sets the time limit for avoiding a voidable act.
Our practical view These cases are won or lost on the evidence from the few days around the signing, not on the feeling of being forced. A court looks at who started it, who typed the letter, whether a choice was offered, and what the employee did afterwards. An employee who objects in writing at once and keeps the messages is usually in a better position than one who stays silent for months. We cannot say how a case will turn out until we have seen the documents.
Hypothetical Puri has four years of service and earns 18,000 baht a month at a building-materials shop in Khon Kaen. The HR manager, Wanna, calls Puri in on a Friday afternoon, hands over a typed resignation letter and says, "If you don't sign today, a dismissal letter for disciplinary breach goes out tomorrow." Puri signs. That evening Puri messages a colleague who was sitting outside the room to ask what they heard. We use this example throughout.
1. Why a signed resignation is normally the employee ending the contract
Resignation is the employee's one-sided declaration that they end the contract. Once it reaches the employer it takes effect; as a rule the employer need not agree. The consequences are:
- It is not a "dismissal", so no severance arises under Section 118.
- The employer owes no pay in lieu of notice, because the employer did not end the contract.
- If the letter says "voluntary, no claims", the employer will use that wording to argue there is no dispute.
But the title of a document does not bind the court. It looks at who in fact decided that the contract would end, and whether the employee's intent was free.
2. When the facts may show a dismissal by the employer
The following make a disguised-dismissal argument stronger. None of them decides the matter alone.
| Fact | Why it matters |
|---|---|
| The employer offered a choice between "resign" and "be fired" | Shows the employer had already decided to end the contract; the employee chose only the form |
| The employer typed the letter and set the date | The wording and date are the employer's, not the employee's initiative |
| Signing was demanded in the meeting, with no time to think or take advice | Reduces how free the decision was |
| The employee had never said they wanted to resign | No other reason explains the resignation |
| The employer immediately hired a replacement for the position | Suggests the employer planned it in advance |
| The employee objected or asked to return within a short time | Inconsistent with a voluntary resignation |
A caution: the employer may say you asked to resign to take another job, or chose to resign to protect your record. That is also your right, so the court weighs the evidence as a whole.
3. Does pressure amount to duress that makes the letter voidable?
Section 164 of the Civil and Commercial Code provides that a declaration of intent made because of duress is voidable, if the threat is serious and imminent enough to give the person reasonable grounds for fear, and the act would not have been done without it. Section 165 provides that a threat to exercise an ordinary right is not duress, and that acting out of respect or reverence is not acting under duress. Section 166 makes duress a ground even where a third party made the threat.
In employment matters the line falls roughly here.
- Usually not duress Saying "if you really breached the rules, we will discipline you under the work rules", because the employer is entitled to do that.
- May qualify Threatening a criminal complaint or lawsuit without basis, threatening harm or public shaming, keeping you in the room, or holding important documents until you sign.
Time limit Section 181 provides that a voidable act can no longer be avoided after one year from the time it could have been ratified, or after ten years from when the act was done. If you intend to rely on this, do not wait: evidence fades, and silence lets the employer argue you accepted the situation.
Deception, for example the employer falsely saying you would get a lump sum if you resigned, is a separate issue under Section 159 and depends on the facts of each case.
In our example, "if you don't sign, a dismissal letter for disciplinary breach goes out tomorrow" may be treated as the exercise of an ordinary right if the employer really has disciplinary grounds. If there were no real grounds and it was said only to push Puri out, that fact is itself evidence of a dismissal that the employer may find hard to explain away.
4. Can you withdraw the resignation if you change your mind?
As a general principle, a resignation that has reached the employer cannot be withdrawn by the employee alone; the employer must agree. If the employer agrees, get it confirmed in writing. If it refuses, the challenge has to rest on other grounds, such as a disguised dismissal or a declaration made under duress, not simply on having changed your mind. That is why your first message after signing matters (see Section 6): it shows you did not accept the situation.
5. Evidence that separates "resigned by choice" from "dispute"
Start by writing a timeline while your memory is fresh. Here is a table following Puri's story.
| When | Who said or did what | Evidence | Who saw it |
|---|---|---|---|
| Wednesday | Supervisor says orally "HR will talk to you" | None | No one |
| Thursday | Wanna sends a LINE message calling a Friday afternoon meeting, no topic given | LINE screenshot | No one |
| Friday 14:00 | Typed resignation letter handed over; "If you don't sign, dismissal letter tomorrow" | The letter | Manager; colleague outside the room |
| Friday 14:20 | Puri signs and is told to return the staff card at once | None | Colleagues |
| Friday 19:00 | Puri sends an objection message to HR | Screenshot with time | No one |
| Monday | Job advertisement for the same position | Screenshot of advertisement | No one |
What to keep:
- Chat messages LINE, email and messages to HR or the supervisor, especially any that say "choose: resign or get fired". Keep the whole conversation, not one sentence, showing dates, times and sender names. Back them up somewhere other than one phone.
- Meeting invitations The email or message calling the meeting, its subject, attendees and time.
- The letter itself Who typed it, who holds the original file, whether the date matches the day of signing, whether the wording is yours or a stock form, and whether it says "no claims of any kind". Photograph it before handing anything back.
- Witnesses People who saw or heard what happened, and people you told right afterwards. Note their names, positions and what they saw. Do not pressure witnesses, and understand that those still employed may hesitate.
- Work documents Employment contract, work rules, warning history, appraisals and pay slips, to see whether real disciplinary grounds existed. If the exit grew out of a performance process, see Performance improvement plans (PIP).
- What happens after signing A replacement being advertised, system access cut, instructions to return items, and the final pay.
Only keep material you can lawfully access. Do not enter another person's account, email or phone without permission, which may breach the Computer Crime Act and the PDPA. How much weight a court gives to a recording of a conversation you took part in is a matter to discuss with a lawyer before you use it. Never publish clips or post to shame the employer.
6. What to do right after signing
- Send a short written objection the same day, or within a few days at most. Use the LINE account or email the employer already uses with you. Sample message:
Dear Wanna, HR
On ... at about ... in the meeting room, you told me that if I did not sign a resignation
letter I would be issued a dismissal letter the next day, and you handed me a resignation
letter that had already been typed for me to sign at once.
I signed because of that pressure. I did not resign voluntarily.
I do not accept that this is a resignation, and I regard the company as having required me
to leave. Please send me, in writing, a copy of the resignation letter I signed and the
company's reasons. I do not waive any of my rights.
Puri (full name) Date ...
- Keep copies of everything. Photograph the letter, the rules and any documents the employer gave you, and send copies to your private email.
- Do not sign anything more, especially a "received in full" receipt, a waiver or a handover form. Read it and ask for time to check. These papers can affect the rights you still have. See Labour settlement agreements: what to check before signing.
- Ask for the documents you are entitled to: a work certificate, your latest pay slip and written confirmation of the end date.
- Decide the route for your claim. A complaint to a labour inspector and a claim in the Labour Court have different limits and deadlines. Read Labour inspector or Labour Court and Going to the Labour Court for the first time, then take advice before filing.
7. If it was a disguised dismissal, what can you claim?
If the court finds the employer ended the contract, the result may include:
| Item | Basis | Note |
|---|---|---|
| Severance | Section 118 | By length of service: 30 days from 120 days of service, 90 days from 1 year, 180 days from 3 years, 240 days from 6 years, 300 days from 10 years, 400 days from 20 years; exceptions under Section 119 |
| Pay in lieu of notice | Sections 17 and 17/1 | Normally one pay period of wages, depending on the contract and pay cycle |
| Compensation for unfair dismissal | Labour Court Establishment and Procedure Act, Section 49 | The court considers length of service, hardship, the reason for dismissal and the employer's finances |
| Unpaid wages and other sums | Contract and law | For example the last pay period and unused annual leave, if entitled |
In the example, Puri has four years of service and earns 18,000 baht, which is 600 baht a day. Severance at 180 days under Section 118 comes to 108,000 baht. If the employer can prove a ground under Section 119, such as a repeated breach after a written warning, severance may not be payable. The real outcome depends on the evidence and the court; the figure is not a promise.
Social Security unemployment benefit The Social Security Office treats an employee who resigned and one who was dismissed differently, in the rate and the period of payment, and the unemployed person must register as unemployed within the deadline. We did not confirm the current figures from the Social Security Office website in writing this guide, so we give no rates. Check with the Social Security Office or hotline 1506. One point to know: the reason the employer states in its report of the end of employment may affect the assessment. If it is untrue, object in writing and keep a copy.
8. For HR: how to run an exit conversation without creating a forced-resignation claim
If the employer wants an employee to leave, pressing them to sign a resignation is riskier than it looks, because it can be seen as a dismissal without proper grounds and expose the company to both severance and compensation. Safer practice:
- Decide first what this is. If the company is ending the job, treat it as a dismissal with reasons and pay the statutory sums. If the employee wants to resign, let the employee start it and write it.
- Do not set a pressured choice. Allow at least one or two working days, say they may take advice, and do not demand signature in the meeting.
- Let the employee write it, or at least set the date and wording, rather than a company-typed form with a waiver of claims.
- Do not threaten beyond your rights, for example a baseless criminal complaint. If there are real disciplinary grounds, use the procedure in the work rules. See Suspension during a disciplinary investigation.
- If you agree a mutual exit, put it in a written agreement stating the sums paid and give the employee time to read it. See Labour settlement agreements.
- Record the conversation: a note of the meeting, attendees and reasons, written truthfully.
See our service on HR documents and work rules.
9. Checklist
Straight after signing
- Write the timeline as in the table in Section 5 while your memory is fresh
- Send a short written objection to the employer and keep proof it was sent
- Photograph or obtain a copy of the signed resignation letter
- Sign nothing more until you have read it and taken advice
Evidence
- Back up the full LINE chats, emails and meeting invitations
- Note names and contact details of witnesses
- Keep the employment contract, work rules, warning history and pay slips
- Note what happened after signing, such as a replacement being advertised
Route and time
- Choose between the labour inspector and the Labour Court
- Count the relevant time limits, including the Section 181 period for avoidance if you rely on duress
- Check unemployment benefit and register as unemployed within the deadline
Further reading
- Dismissed from work: your rights — overview of employee rights and deadlines
- Severance pay on termination — how severance and related sums are worked out
- Going to the Labour Court for the first time — mediation and trial steps
- Labour inspector or Labour Court — choosing the route for a claim
- Labour settlement agreements: what to check before signing — before signing a receipt or waiver
- Performance improvement plans (PIP) — when the exit begins with a performance issue
A signed resignation does not automatically end every right, but the result depends on whether you can prove what happened and what you did after signing.
We review the resignation letter and the evidence, build the timeline, draft the objection letter, and help you choose between the labour inspector and the Labour Court. For employers, we design exit procedures that do not create disputes. For an initial consultation, call +66 92 254 2045 or send us the details. See also labor law disputes and advice and HR documents and work rules.
This guide is published by Suwanvara Law Firm — a Khon Kaen law firm established in 1986. General information only, not legal advice on a specific matter.

