Thailand Visa Certificates

Can I use a UK medical certificate for a Thai work permit?

Written by the clinical team at The Healthify  ·  Last updated 26 September 2026

Picture this. You've moved to Bangkok, the job's sorted, and you're sitting in the labour office with a folder of paperwork you spent weeks putting together back in the UK. Then someone slides your medical certificate back across the desk and tells you it can't be used. It's a horrible moment, and it happens more often than it should.

Before we start: this article is about the paperwork and the process behind visa medical certificates. It is not medical advice, and nothing here should be used to work out whether you personally have or don't have any condition. If you have a question about your own health, speak to your GP or another qualified clinician.

We write from official sources, including published consulate checklists, government guidance and the legislation itself, and we link to them so you can check for yourself. Those sources change, sometimes without notice, so always confirm the current requirements with the authority handling your application before you pay for anything.

The short answer

No. A medical certificate issued in the UK can't be used for a Thai work permit application. Thai requirements are that it comes from a physician practising in Thailand, and certificates from outside the country aren't accepted for that purpose.

A UK certificate is the right document for the O-A and O-X long stay visas, which you apply for from your country of residence. The work permit is a separate application with its own rule.

Why the visa and the work permit are different

It's easier to understand if you stop thinking of them as one process and start seeing them as two, handled by two different sets of people.

Your visa is issued by a Thai embassy or consulate in the country you're applying from. Since that's the UK, your supporting documents come from the UK, and that includes the medical certificate. That's the whole logic behind the rule that it has to be issued in the country of application.

Your work permit is issued inside Thailand, by Thai authorities, once you're already there. As far as they're concerned, it's a domestic process, and the medical certificate that goes with it is expected to come from a Thai doctor.

Same document name. Completely different chain of custody.

Table showing which Thai visa categories accept a UK issued medical certificate and which require one issued in Thailand
Where a UK certificate works, and where it doesn't.

What a UK certificate does cover

For the categories where a UK issued certificate is the right document, the requirement traces back to Ministerial Regulation No. 14, which names the conditions that bar entry to Thailand. Your certificate confirms you're free of them.

The main ones are the O-A long stay visa and the O-X ten year visa, both applied for from your country of residence, usually by people aged 50 or over who are planning to retire or settle in Thailand.

Thailand handles legalisation differently too

Spain and Greece use the FCDO apostille. Thai requirements generally call for notarisation instead. This catches people out, because they book an apostille by analogy with European applications and then discover it wasn't what was asked for. Check which one your consulate wants before you pay for either.

Be careful who you buy from. Some providers advertise Thai medical certificates without ever distinguishing between visa and work permit applications. If a service offers you a UK certificate for a Thai work permit, they're either not familiar with the requirement or they're not being straight with you. Either way, you're the one standing in the labour office.

If you need one for a work permit

Get it in Thailand. Hospitals and clinics in Bangkok, Chiang Mai and the other main centres do these every day. They know the current form, and it's generally quick and inexpensive by UK standards.

Your employer or their agent will usually have a clinic they'd rather you used, so it's worth asking them before you book anything yourself.

The order to do things in

  1. Sort your visa first, using a UK issued certificate if your category needs one
  2. Travel to Thailand
  3. Get your work permit medical certificate locally, from a Thai clinic or hospital
  4. Submit it with your work permit application

Questions people ask us

Q I've already bought a UK certificate for my work permit. What now?

Ask the provider about a refund. The document itself isn't faulty, it just can't be used for that particular application.

Q What does Ministerial Regulation No. 14 cover?

It names a specific list of conditions that bar entry. Your doctor confirms you're free of them as part of the consultation.

Q Is the O-A the same thing as a retirement visa?

Broadly, yes. It's the long stay visa generally used by applicants aged 50 or over. The O-X is the ten year version.

Q Do I need an apostille for Thailand?

Usually notarisation rather than apostille, but confirm with the Royal Thai Embassy, since requirements differ by category.

Q How long is the certificate valid?

Short, and applied firmly. Get it when the rest of your application is close to ready.

Why we're telling you this

We issue medical certificates, and this article talks a fair share of our readers out of buying one. We'd rather do that than take an order we already know can't be used.

If you're applying for an O-A or O-X visa from the UK, we can help with that. If you need a certificate for a Thai work permit, you need a doctor in Thailand, and no UK provider can change that however confidently they advertise.

Where this information comes from. We write these articles from official sources: the published checklists of the consulate or embassy concerned, UK government guidance, and the text of the legislation itself. Where we have relied on a particular source, we link to it so you can read it yourself.

Those sources change, sometimes without notice, and different consulates sometimes apply the same rules differently. Everything above reflects our understanding on the date shown at the top of this page.

This article covers the process and the paperwork only. It is not medical advice, legal advice or immigration advice, and we are not immigration advisers. For anything concerning your own health, speak to your GP or another qualified clinician. For what your own application requires, confirm directly with the authority handling it before you order anything or book travel.

Related reading

Applying for an O-A or O-X visa?

Our UK GPs issue certificates covering the conditions listed in Ministerial Regulation No. 14, after a live video consultation.

See the Thailand requirements