A lawful reason is not the same as a fair process
Thai law allows a company to reduce its workforce for genuine business reasons — lower demand, closure of a line, a reorganisation, new technology. It is not a disciplinary dismissal, and the employee has done nothing wrong.
That is exactly why the process matters. Because the employee is not at fault, severance and notice are still owed, and if a dismissed employee claims the termination was unfair, the Labour Court examines why the reduction was needed, who was selected, and how the process was run.
1. Document the business reason first
Before any names are discussed, write down:
- What has changed in the business — volumes, contracts lost, a line closed, a process automated
- Which roles or units are affected and why
- What alternatives were considered — reduced hours, redeployment, transfer to an affiliate, relocation
A reason written after the list of names looks like a justification. A reason written first looks like a decision.
See transferring employees to an affiliated company and relocating your workplace for alternatives that follow their own rules.
2. Selection criteria
Use criteria that connect to the business reason and can be applied consistently:
| Criterion | When it works |
|---|---|
| Role or unit removed | The work itself no longer exists |
| Skills needed after the change | The remaining roles need different capabilities |
| Performance records | Only if records exist, were kept consistently and pre-date the decision |
| Length of service | As a tie-breaker, applied the same way to everyone |
Record how each criterion was applied to each employee in the affected pool. A spreadsheet prepared at the time is far stronger evidence than a recollection at trial.
3. Protected groups to check before finalising
- Pregnant employees — dismissal on account of pregnancy is prohibited
- Employee representatives and committee members — specific protections apply
- Union members and officials
- Employees with pending complaints, claims or inspections
- Employees on leave for sickness, injury or maternity
Selection that falls disproportionately on these groups invites the argument that the redundancy was a pretext.
4. When machinery or technology replaces jobs
A specific rule applies where employees are terminated because the employer reorganises its work, production, distribution or services as a result of introducing or changing machinery or technology:
- The employer must notify the labour inspector and the affected employees in advance, within the period the law sets
- If notice is not given, special severance in lieu of notice is payable
- Employees with long service are entitled to additional special severance on top of ordinary severance
If automation is part of the reason, plan the notice timeline around this rule.
5. Notice and payments
For every employee terminated in the reduction:
- Notice under the employment terms and the law, or pay in lieu
- Severance according to length of service — see severance pay in Thailand
- Accrued entitlements — unused annual leave, outstanding wages, overtime
- Special severance where the technology rule applies
- Timely payment — late payment of severance creates further liability
6. Voluntary separation schemes
A voluntary scheme reduces claims because the employee chooses to leave. It works when:
- Eligibility is clear and applied consistently
- The choice is genuinely voluntary, with time to decide
- Terms are at least as good as the legal entitlements, usually better
- Communication does not imply that those who stay will be dismissed anyway
Releases signed on departure are useful, but a release obtained through pressure is weak. A scheme that is voluntary in form but not in practice is treated as a dismissal.
7. Communication and sequence
- Business reason and alternatives documented
- Affected pool defined and criteria agreed
- Protected-group check completed
- Budget approved for severance, notice and any special severance
- Notifications prepared where the technology rule applies
- Voluntary scheme launched, if used, with a closing date
- Individual meetings held, letters delivered, payments made on time
- Work permits of departing foreign employees handled
- Records kept together in one file
After the reduction
Expect questions from the labour office and, sometimes, claims. A complete file answers them quickly. See defending an employer in the Labour Court.
Read next
- Severance pay in Thailand
- Relocating your factory or office
- When a Thai company can no longer pay its debts
- If you are planning a reduction, talk to our team before the list of names is final