Can a foreign marriage be used directly in Thailand?

Usually it must first be legalised, translated and recorded in the family-status register before it works as relationship evidence for immigration purposes.

May a dependant work?

Permission to stay is not permission to work; a work permit under the foreign-worker law must be obtained before starting.

What if the primary holder changes employer?

The dependant’s permission follows the primary holder, so review and act on it at the same time as the primary change.

Must every document be in Thai?

Foreign-language documents need a translator-certified translation, and officers sometimes require MFA legalisation as well.

Do both routes require reporting?

Both must report periodically and notify changes of address under the Immigration Act B.E. 2522.

Can the document list change?

Yes — criteria come from the order in force when you file, so confirm the list with the responsible immigration office beforehand.

Thai marriage certificate with its English translation

Non-Immigrant O based on marriage to a Thai national compared with dependant status under a work-visa holder

Quick answer

Both are grounds for staying on, but different ones. The marriage route rests on the relationship with a Thai spouse and Thai civil-registration evidence. The dependant route is tied to the primary visa holder: when that status ends, the dependant’s permission ends with it. The criteria and document lists come from the Royal Thai Police order in force at the time of filing.

What each option is

Extension on the basis of a Thai spouse

Permission to stay on relying on marriage to a Thai national under Immigration Bureau criteria.

Authority: Immigration Bureau

Extension as a dependant

Permission to stay as the spouse or child of someone permitted to stay for employment.

Authority: Immigration Bureau

Comparison table based on published requirements

Non-Immigrant O based on marriage to a Thai national compared with dependant status under a work-visa holder
Criterion	Extension on the basis of a Thai spouse	Extension as a dependant
Ground relied on	Marriage to a Thai national.	Relationship to a primary holder permitted to stay for employment.
Relationship evidence	Thai marriage registration or family-status registration plus the spouse’s civil-registration papers.	Marriage certificate or birth certificate; if issued abroad, certified and translated as required.
Durability of the status	Tied to a subsisting marriage; if it ends, the ground must be re-examined.	Tied to the primary holder; if the employment or primary permission ends, so does the dependant’s.
Right to work	Permission to stay is not a work permit; working requires a permit under the foreign-worker law.	The same: a dependant who wants to work needs a separate work permit.
Address reporting	Periodic reporting and address notification under the Immigration Act B.E. 2522.	The same duties under the Immigration Act B.E. 2522.
Documents from abroad	A foreign marriage is normally recorded in the Thai family-status register before it is relied on.	Foreign relationship documents need the certification layer and a certified translation.

Which route fits which case

Extension on the basis of a Thai spouse: You are married to a Thai national and want to rely on that relationship directly.
Extension as a dependant: You are the spouse or child of someone permitted to stay in Thailand for work.

Mistakes that get files sent back

Relying on a foreign marriage certificate before recording it in the Thai family-status register.
Assuming permission to stay allows employment without a work permit.
Filing outside the permitted window and having to restart the process.
Failing to adjust the dependant’s status when the primary permission changes.

Frequently asked questions

Can a foreign marriage be used directly in Thailand?: Usually it must first be legalised, translated and recorded in the family-status register before it works as relationship evidence for immigration purposes.
May a dependant work?: Permission to stay is not permission to work; a work permit under the foreign-worker law must be obtained before starting.
What if the primary holder changes employer?: The dependant’s permission follows the primary holder, so review and act on it at the same time as the primary change.
Must every document be in Thai?: Foreign-language documents need a translator-certified translation, and officers sometimes require MFA legalisation as well.
Do both routes require reporting?: Both must report periodically and notify changes of address under the Immigration Act B.E. 2522.
Can the document list change?: Yes — criteria come from the order in force when you file, so confirm the list with the responsible immigration office beforehand.

Official sources

Checked on 2026-08-03; confirm with the authority before filing.

Ask our team

The exact steps depend on the receiving authority in each case. Contact our team to confirm the checklist and timing.

Non-Immigrant O based on marriage to a Thai national compared with dependant status under a work-visa holder

Quick answer

What each option is

Extension on the basis of a Thai spouse

Permission to stay on relying on marriage to a Thai national under Immigration Bureau criteria.

Authority: Immigration Bureau

Extension as a dependant

Permission to stay as the spouse or child of someone permitted to stay for employment.

Authority: Immigration Bureau

Comparison table based on published requirements

Non-Immigrant O based on marriage to a Thai national compared with dependant status under a work-visa holder
Criterion	Extension on the basis of a Thai spouse	Extension as a dependant
Ground relied on	Marriage to a Thai national.	Relationship to a primary holder permitted to stay for employment.
Relationship evidence	Thai marriage registration or family-status registration plus the spouse’s civil-registration papers.	Marriage certificate or birth certificate; if issued abroad, certified and translated as required.
Durability of the status	Tied to a subsisting marriage; if it ends, the ground must be re-examined.	Tied to the primary holder; if the employment or primary permission ends, so does the dependant’s.
Right to work	Permission to stay is not a work permit; working requires a permit under the foreign-worker law.	The same: a dependant who wants to work needs a separate work permit.
Address reporting	Periodic reporting and address notification under the Immigration Act B.E. 2522.	The same duties under the Immigration Act B.E. 2522.
Documents from abroad	A foreign marriage is normally recorded in the Thai family-status register before it is relied on.	Foreign relationship documents need the certification layer and a certified translation.

Which route fits which case

Extension on the basis of a Thai spouse: You are married to a Thai national and want to rely on that relationship directly.
Extension as a dependant: You are the spouse or child of someone permitted to stay in Thailand for work.

Mistakes that get files sent back

Relying on a foreign marriage certificate before recording it in the Thai family-status register.
Assuming permission to stay allows employment without a work permit.
Filing outside the permitted window and having to restart the process.
Failing to adjust the dependant’s status when the primary permission changes.

Frequently asked questions

Can a foreign marriage be used directly in Thailand?: Usually it must first be legalised, translated and recorded in the family-status register before it works as relationship evidence for immigration purposes.
May a dependant work?: Permission to stay is not permission to work; a work permit under the foreign-worker law must be obtained before starting.
What if the primary holder changes employer?: The dependant’s permission follows the primary holder, so review and act on it at the same time as the primary change.
Must every document be in Thai?: Foreign-language documents need a translator-certified translation, and officers sometimes require MFA legalisation as well.
Do both routes require reporting?: Both must report periodically and notify changes of address under the Immigration Act B.E. 2522.
Can the document list change?: Yes — criteria come from the order in force when you file, so confirm the list with the responsible immigration office beforehand.

Ask our team

The exact steps depend on the receiving authority in each case. Contact our team to confirm the checklist and timing.

ใบอนุญาตทนายผู้ทำคำรับรองลายมือชื่อและเอกสาร

Non-Immigrant O based on marriage to a Thai national compared with dependant status under a work-visa holder

Quick answer

What each option is

Extension on the basis of a Thai spouse

Extension as a dependant

Comparison table based on published requirements

Which route fits which case

Mistakes that get files sent back

Frequently asked questions

Official sources

Related pages

Ask our team

Non-Immigrant O based on marriage to a Thai national compared with dependant status under a work-visa holder

Quick answer

What each option is

Extension on the basis of a Thai spouse

Extension as a dependant

Comparison table based on published requirements

Which route fits which case

Mistakes that get files sent back

Frequently asked questions

Official sources

Related pages

Ask our team