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Work permits, BOI/IEAT privileges, Treaty of Amity and APEC card — practical answers

First-party answers on Thai work authorisation: the standard Department of Employment route, BOI and IEAT channels for skilled experts, US company rights under the Treaty of Amity, and the APEC Business Travel Card for Thai nationals — including which supporting documents must be translated and legalised first. (19+ search topics covered)

What rights does the Treaty of Amity give US companies?

The 1966 Treaty of Amity and Economic Relations lets US nationals and majority US-owned companies operate in Thailand on largely the same footing as Thai nationals, exempt from many restrictions of the Foreign Business Act B.E. 2542, with some sectors still excluded such as land and certain resource activities. Use of the treaty requires nationality certification through the US Embassy and registration with the Department of Business Development.

Can dependants of a work-permit holder work?

Permission to stay as a dependant and permission to work are separate matters. Dependants admitted on the basis of the principal's status do not gain an automatic right to work; they need an employer and their own work permit application under the normal criteria. Children entering school require a separate process, including certified translations of academic records.

Must authorisation be obtained before starting work?

Yes. A foreign national must hold the permit before performing work, and may only do the role, for the employer and at the locations stated in the permit. Trial periods and side assignments outside that scope are not covered. Changes of employer, position or workplace require notification or amendment through the Department of Employment.

Which comes first, the visa or the work permit?

In the usual sequence, the foreign national first holds a non-immigrant visa consistent with the intended employment, then applies for a work permit under the law on managing the employment of foreign workers, administered by the Department of Employment. Continued stay afterwards is decided separately by the Immigration Bureau. The three systems are distinct but interlocking, and a gap in one blocks the next.

How are foreign degrees and experience letters used for a Thai work permit?

They are normally authenticated by the competent authority in the issuing country and by the Royal Thai Embassy there, or by apostille once the Convention enters into force for Thailand on 28 February 2027 where accepted, then translated into Thai and legalised by the Department of Consular Affairs. Experience letters should state the position, exact dates, duties and the issuer's contact details, because verification enquiries do occur. Confirm the document list with the Department of Employment or the receiving office before preparing the file.

Does Treaty of Amity status remove the work permit requirement?

No. The treaty concerns the company's right to do business, not an individual's right to work. US executives and staff still need an appropriate visa category and a work permit under the same rules as other foreign nationals.

What happens if the permit lapses while renewal is pending?

Renewal must be filed before expiry within the period set by the regulations, and the permitted-to-stay end date must be tracked alongside it because the two dates do not always coincide. A lapse can force a restart and affect immigration status. Set calendar reminders several weeks ahead and keep current employer documents ready before the deadline.

How are foreign degrees and experience letters handled?

They usually must be translated into Thai or English as required and legalised through the diplomatic chain: certified in the issuing country (apostille where that country is a Convention party), then endorsed by the Royal Thai Embassy, or endorsed by that country's embassy in Thailand and then legalised by the Legalization Division of the Department of Consular Affairs before submission.
Topics covered
หน่วยงานที่เกี่ยวข้อง: กรมการจัดหางาน (DOE) · สำนักงานคณะกรรมการส่งเสริมการลงทุน (BOI) · การนิคมอุตสาหกรรมแห่งประเทศไทย (กนอ./IEAT) · กรมพัฒนาธุรกิจการค้า (DBD) · สำนักงานตรวจคนเข้าเมือง (ตม.) · กรมการกงสุล กระทรวงการต่างประเทศ
คำค้นหลัก: ขอใบอนุญาตทำงานคนต่างชาติ · work permit thailand requirements · BOI work permit e-Expert · one stop service center visa work permit · IEAT work permit นิคมอุตสาหกรรม · treaty of amity company registration · บัตรเอเปค APEC Business Travel Card
เอกสารที่มักต้องแปล/รับรอง: ปริญญาบัตร/ทรานสคริปต์ · หนังสือรับรองประสบการณ์ทำงาน · ใบอนุญาตประกอบวิชาชีพ · หนังสือรับรองบริษัทต่างประเทศ · หนังสือมอบอำนาจ (Power of Attorney) · ทะเบียนสมรส/สูติบัตรของผู้ติดตาม
Official references

Need your documents reviewed or your case assessed? Ask our team by phone, LINE, or email. We reply during business hours (Mon–Fri 9:00–18:00, Sat 9:00–15:00, ICT).

083-249-4999LINE @NYCVcontact@nycvisa.org
Company documents used to support a work permit application
Company documents used to support a work permit application — From actual casework by the NYC Visa & Translation team
Service Playbook

Thai work permit — company-side and employee-side documents

Work permits are issued by the Department of Employment and are tied to the employer, position and workplace. Changing job, role or location requires a new filing.

Documents to prepare

  • • Company side: current affidavit, shareholder list, financial statements, social security filings
  • • Employee side: passport, the correct visa category, and the required medical certificate
  • • Degrees and experience letters, legalised at source and translated for Thai use
  • • Employment contract and job description
  • • Workplace map and photographs where requested
  • • Power of attorney for the company's filing agent

Step-by-step process

  1. 1. Check company and role eligibility — Registered capital, Thai-to-foreign staff ratio and reserved occupations are verified first.
  2. 2. Prepare foreign documents — Qualifications and experience letters must be legalised abroad and translated before filing.
  3. 3. File the application — Through the Department of Employment, or a dedicated channel such as the BOI One Stop Service.
  4. 4. Collect and comply — Work only within the stated role and location, and renew before expiry.

Pitfalls and rejection causes

  • • Working outside the stated role or location breaches the permit conditions.
  • • A permit belongs to the employer — it cannot follow you to a new company.
  • • Visa and permit expire on different dates; track both.
  • • Company documents older than the accepted window must be reissued.

Tips from our team

  • • Set reminders at least 45 days before either expiry date.
  • • Maintain a standing company document pack to speed up future filings.
  • • BOI-promoted companies should use the dedicated channel to cut steps.

Prefer not to handle the queues yourself, or worried about a rejection? Send us photos of your documents for a free pre-check. We handle the full chain — obtaining certified copies, translation, certification and submission — and keep you updated at each step. Reach us on LINE, phone or email during business hours.

Route Comparison

Comparing Thai work permit routes

Different employer types use different channels, and each channel pairs with a different visa category.

RouteWhen to useCertifying authorityApprox. durationRejection risk
Standard filing with the Department of EmploymentThe employer is an ordinary Thai company without BOI promotionDepartment of Employment, Ministry of LabourVariable, driven by how complete the employer's file isThai-to-foreign staff ratios and registered capital not meeting thresholds is the common refusal ground
BOI-promoted company channelThe employer holds a promotion certificate and the position is on the approved listBOI together with the Immigration Bureau and Department of EmploymentGenerally faster than the standard route, still variableA position that differs from the approved list requires an amendment first
Conditional or short-term work authorisationShort assignments or job types covered by specific published rulesDepartment of Employment under the notification in forceShorter than a full applicationWorking beyond the authorised scope is an offence even when a permit exists

Timelines above are practical estimates from live casework and can change with each authority's policy; confirm with the receiving authority before booking travel. If you would rather not test routes by trial and error, our advisers can assess which route fits your case.

Advisory Service

We do not just process documents — we advise you through the whole case

Our team has worked on cross-border documents, certified translation and government liaison for over 15 years. Most rejections we see are not caused by missing paperwork but by choosing the wrong route on day one, so we always start with a case assessment.

Route assessment

We look at your destination, purpose and deadline, then tell you which certification route applies — and which steps you can skip.

Pre-submission review

Name spelling, consistency across documents, document age and translation format are checked before anything reaches a counter.

Timeline planning

We sequence the steps around your appointment or travel date and flag bottlenecks in advance.

Rejection recovery

We read the refusal reasons, identify the underlying cause, and plan a resubmission that answers what the authority asked for.

Rather not learn by trial and error? Send your case details and document photos for a review — reach us on LINE, phone or email during business hours.

Practical Q&A

Practical questions · Near me / DIY / Required documents

Where is a Thai work permit filed, and must the employee attend?

Applications are filed with the Bangkok area employment office or the provincial employment office covering the workplace, under the Department of Employment, Ministry of Labour. Some categories can be filed through the e-Workpermit system. An employer or authorised representative may file, but the employee may still be asked to appear. We can assemble and pre-check the document set; contact our team by phone, LINE or email.

How must foreign supporting documents be translated and certified?

Foreign degrees or experience letters are first certified in the issuing country and by the relevant embassy, then translated into Thai or English as required by the receiving office, and finally legalised by the Legalization Division of the Department of Consular Affairs. Doing these steps out of order is the most common cause of rejection.

Can I handle the application myself?

Yes, the Department of Employment procedure is open to applicants and employers. Delays usually come from outdated forms, company documents older than the office accepts, and translations that do not match the required format. Check the current checklist of the office you will file with before you start.
Practical advice & cautions

Visa and immigration matters: advice and cautions

Before you start

  • Read the official conditions first

    Visa conditions change. Check the deciding authority's latest announcement, then use our service to prepare documents and translations that match those conditions.

  • Keep every receipt and acknowledgement

    Photograph all filing receipts and stamps; they are key evidence in any later verification.

  • Plan around expiry dates

    Extensions, reporting and re-entry permits should be handled well ahead of the deadline; queues and public holidays can make last-minute filing impossible.

  • Order documents to the authority's checklist

    Assembling the bundle in the required order with an index speeds up assessment and reduces requests for more documents.

Common reasons documents get rejected

  • Expired supporting documents

    Civil registry extracts, medical certificates and police clearances have limited validity; old copies make the bundle incomplete.

  • Form data contradicting the attachments

    Dates, addresses or travel history that conflict with supporting documents are a frequent refusal ground and may be read as misrepresentation.

  • Refiling immediately without fixing the cause

    Analyse the refusal grounds and address them; resubmitting the same file usually produces the same result.

  • Ignoring post-approval obligations

    Periodic reporting, address notification and work conditions are ongoing duties that affect the next extension.

Requirements differ by authority and destination country and can change. Confirm current conditions with the receiving authority, or ask our team by phone, LINE or email.

What people search for

Frequently searched topics about visas and immigration

Documents required for a visa application
Checklists are set by the embassy or receiving authority; always follow their current published notice.
Refusal and reapplication
Read the stated reason first and address the actual cause rather than resubmitting the same file.
Extensions and periodic reporting
Long-stay holders must report at the intervals set by the Immigration Bureau.
A visa is not a work authorisation
Holding a visa does not automatically grant work rights; a work permit is a separate matter.

These topics reflect the rules and practice of the relevant authorities and can change. Confirm with the receiving authority, or ask our team by phone, LINE or email.

Related services

What clients usually handle next

One document set often moves through several stages — translation, notarial certification, legalization and finally a visa filing. The links below follow that real sequence.

External authority references

Authority requirements change. Verify with the receiving authority before filing, or ask our team by phone, LINE or email.