A foreign national coming to Thailand for anything beyond short-term tourism generally needs a visa matching the purpose of travel, obtained before departure from a Royal Thai Embassy or Consulate-General or through the Ministry of Foreign Affairs' Thai e-Visa system. Once in Thailand, extensions of stay and reporting obligations sit with the Immigration Bureau, while the right to work requires a separate work permit from the Department of Employment — a visa is not a work authorisation in itself. Personal and corporate documents issued in a foreign language usually need a complete translation, and in many cases certification by the issuing country's embassy in Thailand followed by legalisation at the Department of Consular Affairs before a Thai authority will accept them.
| What you apply for | Deciding authority | What it covers | What it does not cover |
|---|---|---|---|
| Visa | Royal Thai Embassy or Consulate-General, or Thai e-Visa | Permission to travel to Thailand and seek entry for the stated purpose | Not a work authorisation, and no guarantee that entry will be granted |
| Entry stamp and extension of stay | Immigration Bureau | The period you are permitted to remain, extensions, and periodic reporting | No right to work, and not permanent residence |
| Work permit | Department of Employment, Ministry of Labour | The right to work in the named position, for the named employer, at the named workplace | Does not extend your permission to stay — that is a separate Immigration matter |
| Certification of foreign documents | The issuing country's embassy in Thailand and the Department of Consular Affairs | Makes a foreign document usable with Thai authorities | Does not verify that the facts stated in the document are true |
Two things are needed side by side: a visa of the category matching employment, and a work permit issued by the Department of Employment. The permit is tied to the employer, position and workplace stated on it, so changing any of them requires a formal amendment. Degrees, transcripts, employment references and police certificates issued abroad normally need full translations and certification.
Spouses and children applying on the basis of a family relationship must evidence that relationship with civil registration records — marriage certificate, birth certificate, household registration or the foreign equivalent. Foreign-issued records generally pass through the issuing country's embassy in Thailand and then the Department of Consular Affairs.
Applications rest on an acceptance or enrolment document from an institution recognised by the relevant Thai authority, supported by previous qualifications and transcripts. Names must be spelled identically across the enrolment document, the qualifications and the passport.
Long-stay routes such as the BOI's Long-Term Resident visa set their own eligibility criteria and evidence lists for each sub-category. Because the criteria and the qualifying evidence are revised from time to time, check the current conditions on the BOI LTR site rather than relying on second-hand summaries.
Employment, business, family, study and long-stay each use a different category and a different evidence set. Choosing the wrong category at the start usually means restarting the whole process.
Each Royal Thai Embassy and Consulate-General publishes its own document list, format rules and lodgement channels, including whether Thai e-Visa is used. That announcement always overrides general guidance.
Marriage certificates, birth certificates, qualifications, police certificates and company records must be rendered completely — body text, stamp text, signature blocks and marginal notes — with personal names spelled exactly as in the passport across every document in the set.
Documents issued abroad are typically certified in the country of origin, then by that country's embassy in Thailand, then legalised by the Department of Consular Affairs. The exact order depends on the country of origin and the Thai office receiving them.
For employment, the usual sequence is to obtain the correct visa category, have the employer lodge the work permit application with the Department of Employment, and then apply to the Immigration Bureau for an extension of stay under the applicable conditions.
Periodic reporting, notification of address, re-entry permission, and notification of a change of employer or position are separate ongoing obligations. Letting the permitted stay and the work permit fall out of alignment is a common and avoidable problem.
No. A visa concerns entry and the purpose of stay. The right to work comes from a work permit issued by the Department of Employment, Ministry of Labour, and it is tied to a specific employer, position and workplace.
Anything issued in a language other than Thai that the Thai authority will rely on: marriage and birth certificates, qualifications and transcripts, employment references, police certificates, and corporate records. The translation must cover the whole document, stamps included.
Frequently, yes. The common chain is certification in the country of origin, then by that country's embassy or consulate in Thailand, then legalisation by the Department of Consular Affairs. Confirm the required chain with the Thai office receiving the documents.
Availability depends on the Royal Thai Embassy or Consulate-General responsible for your location and on the visa category. Check the Thai e-Visa site and that mission's announcement before preparing documents.
Government fees and processing times are set and published by each authority and mission and are revised from time to time, so we do not quote them. Check the official announcement of the office you will lodge with. For translation work, send your page count and destination via LINE, phone or email and we will quote on the actual documents.
No. High-resolution colour scans can be sent from any country and signed certified translations are returned as PDF. Paper originals with legalisation or embassy certification involve additional handling and delivery.
Content reviewed August 2026. General information on document preparation, not legal or migration advice. Requirements, forms and fees are those published by the relevant authority at the time of lodgement.
