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SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
SUWANVARA LAWFIRM
SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
Labor Law

Transferring Employees to an Affiliate Company: Is Consent Required? Does Their Length of Service Continue?

Companies in the same group are still separate employers, so transferring an employee is not merely an internal instruction. This summarizes consent, the counting of length of service and severance pay, the rights that must transfer with the employee, and the documents that should be prepared, from both the employer's and the employee's perspectives.

by Legal Advisory TeamSeptember 13, 20264 min read
Transferring Employees to an Affiliate Company: Is Consent Required? Does Their Length of Service Continue?

Corporate groups made up of multiple legal entities often move employees back and forth between affiliated companies — whether to restructure, set up a new company, or consolidate support functions in one place. This is often done by issuing an internal memo and changing the company name on the payslip.

In legal terms, affiliated companies are separate employers. Moving an employee from one company to another therefore affects the employee's rights far more than it appears, and is a common cause of labour disputes when the employee is later dismissed.

Transferring Position and Transferring Employer Are Not the Same

Transfer within the same companyTransfer to an affiliated company
EmployerThe same personChanges to a new juristic person
Is consent required?Depends on the employment contract and work rules, and must not make the conditions of employment worseConsent from the employee must be obtained
Length of serviceContinuous as normalCan be continuous if the transfer is made with consent, and this should be confirmed in writing

The law provides that an employer cannot transfer its rights under an employment contract to a third party without the employee's consent. Affiliate companies, even if they share the same set of shareholders, are third parties within this meaning.

Labour protection law, for its part, lays down the principle that when there is a change of employer, a transfer, or a merger and the employee consents, the rights the employee holds with the original employer pass to the new employer, and the new employer must be liable for those rights in every respect.

If the employee consents: which rights must follow

  • Length of service — counted as continuous, which is the most important point because severance pay on termination is calculated from length of service.
  • Wages and benefits — not lower than before.
  • Accumulated annual leave days that have not yet been used.
  • Provident fund — if there is one, the transfer or continuation of membership must be handled correctly.
  • Social security — notify withdrawal from the old employer and register with the new employer so that continuity is maintained.
  • Existing non-compete or confidentiality agreements — it must be agreed how they will apply.

Refusing to change employers is not a resignation and is not a refusal to obey an order. The original company remains the employer. The company's options are:

  1. Continue employing the employee at the original company
  2. Send the employee to assist at an affiliated company while remaining an employee of the original company
  3. Terminate the employment, which requires payment of severance based on length of service, payment in lieu of advance notice where notice was not given within the required period, and other entitlements, and carries the risk of being sued for unfair termination

Three models group companies use, and the risk of each

Transfer with continued service — A tripartite agreement is made between the original company, the new company, and the employee, stating that the period of service continues and that the employment conditions are not less favourable. This is the model with the fewest disputes.

Terminate, then rehire — The original company pays severance in full according to the length of service, and the new company starts counting service from zero. This is permissible, but the payment must actually be made and must be complete. If the termination is done without payment and the employee is then made to start anew, the employee can still claim their rights.

Secondment to assist temporarily — The employee remains an employee of the original company but works for an affiliate. It must be agreed clearly who pays the wages, who gives the work instructions, and when the employee will return.

Common Mistakes

  • Asking the employee to sign a resignation letter with the old company in order to join the new one, which creates a dispute over whether the previous period of service has ended.
  • Reducing wages or benefits in the new contract on the grounds that it is a new company.
  • Moving the workplace far away together with the change of employer, which may affect the employee's normal living arrangements and give rise to additional legal rights.
  • Forgetting the work permits of foreign employees, which are tied to the previous employer.
  • Failing to notify social security, causing a gap in coverage.

Documents You Should Have

  1. A tripartite transfer agreement, signed by the authorized representatives of both companies and the employee
  2. A written confirmation that the length of service continues uninterrupted, stating the original start date
  3. New employment terms that are no less favorable than the previous ones
  4. A list of the rights transferred, such as accumulated leave days and the provident fund
  5. Evidence of social security notification and the work permit (if any)

For employees asked to sign transfer documents

Read everything thoroughly before signing, checking whether your years of service continue to count, whether wages and benefits remain the same, and whether the document you are asked to sign is a transfer agreement or a resignation letter. If you are unsure, you can request a copy to read first.

Read more: Severance pay upon termination · Work rules

📌 See more: Labor law · Business law

If a corporate group is about to move employees across legal entities, or you have been asked to sign transfer documents, consult our legal team before signing.


This article provides general information and is not a legal opinion for any specific case.

Frequently asked questions

Can the company simply order an employee to transfer to an affiliate company?+

No. Affiliate companies are separate legal entities. Moving an employee to become an employee of another company therefore amounts to a change of employer, which requires the employee's consent. A unilateral order can be used only for a transfer of position or workplace within the same employer, to the extent permitted by the employment contract and work rules.

If the employee consents to the transfer, does their previous length of service continue to count?+

In principle, if the employee consents to being transferred to become an employee of the new employer, the rights the employee holds with the previous employer transfer as well, and the new employer must be responsible for those rights. This includes counting length of service continuously for calculating severance pay. However, this should be confirmed clearly in the agreement.

If the employee refuses to transfer, can the company terminate their employment?+

Refusing to consent to a change of employer is the employee's right. It is not a resignation and not misconduct. If the company terminates employment for this reason, it must pay severance pay based on length of service and other rights under the law, and it may be sued for unfair termination.

If asked to sign a resignation letter from the old company before joining the new company, should the employee sign?+

Great caution is required. A resignation letter may cause it to be viewed that the previous employment contract ended because the employee resigned voluntarily, which may affect severance pay rights and the counting of length of service. If documentation is necessary, it should be a transfer agreement that clearly states that length of service continues to count and that existing rights are not reduced.

If a foreign employee transfers to an affiliate company, can they use their existing work permit?+

Generally no. A work permit is tied to the employer and the job position. When changing employers, the work permit and visa must be arranged to be consistent with the new employer before starting work.

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