Case studies
Thai work permit — case studies
Real engagements published with client permission, including the document timeline step by step.
บริการยื่นวีซ่า 196 ประเทศทั่วโลก · ครบ 77 จังหวัด · เปิด จันทร์ – ศุกร์ 9:00 – 18:00
These pages describe our actual working process using material the client permitted us to publish. Decisions rest with the receiving authority in each case, so no approval outcome is guaranteed.
No published cases for this service yet — talk to our team for an assessment of your own case.
Service Knowledge Base
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.
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.
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.
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.
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.
Can I keep my work permit after changing employer?
A work permit is tied to the employer and the described work. Changing employer or the nature of the work requires notification or a fresh authorisation within the timeframe set by the Department of Employment's rules. Working for a new employer before that is completed falls outside the scope of the permission and exposes both employee and employer to penalties.
Which authority decides a work permit, and what does it not cover?
The Department of Employment under the Ministry of Labour administers work authorisation for foreign nationals; the Immigration Bureau separately administers the right to stay. A work permit does not extend your permission to stay, and a valid visa does not authorise work. Both must be kept aligned, because expiry of one commonly triggers problems with the other at the next renewal.
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
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
หน่วยงานที่เกี่ยวข้อง: กรมการจัดหางาน (DOE) · สำนักงานคณะกรรมการส่งเสริมการลงทุน (BOI) · การนิคมอุตสาหกรรมแห่งประเทศไทย (กนอ./IEAT) · กรมพัฒนาธุรกิจการค้า (DBD) · สำนักงานตรวจคนเข้าเมือง (ตม.) · กรมการกงสุล กระทรวงการต่างประเทศ
Official references
- สำนักงานตรวจคนเข้าเมือง (Thai Immigration Bureau) — ระเบียบการต่อวีซ่า รายงานตัว 90 วัน และ re-entry permit
- Thai e-Visa Official Portal (กระทรวงการต่างประเทศ) — ช่องทางยื่นวีซ่าเข้าประเทศไทยอย่างเป็นทางการ
- กรมการจัดหางาน (Department of Employment) — ใบอนุญาตทำงาน (work permit) และ Digital Workpermit
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).
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
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.
Make funds explainable
Large deposits made shortly before filing attract questions. Support them with evidence of income and use statements bearing the bank's original seal.
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.
Common reasons documents get rejected
Ignoring post-approval obligations
Periodic reporting, address notification and work conditions are ongoing duties that affect the next extension.
Translations the destination does not accept
Accepted translator categories differ by country; confirm the required type before ordering.
Believing guaranteed-approval claims
No provider can guarantee an outcome; only the immigration authority or embassy decides. Our role is to make the file accurate and complete so avoidable rejections are reduced.
Refiling immediately without fixing the cause
Analyse the refusal grounds and address them; resubmitting the same file usually produces the same result.
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
- Extensions and periodic reporting
- Long-stay holders must report at the intervals set by the Immigration Bureau.
- Refusal and reapplication
- Read the stated reason first and address the actual cause rather than resubmitting the same file.
- Documents required for a visa application
- Checklists are set by the embassy or receiving authority; always follow their current published notice.
- Notification of residence for foreign nationals
- House owners or occupiers must notify the stay of foreign nationals under Thai immigration law.
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.
- Thailand visas for foreign nationalsNew applications, extensions, status changes and 90-day reporting
- Thai work permitsNew applications, renewals and amendments under Department of Employment rules
- BOI, LTR and SMART VisaInvestment promotion privileges and long-term visas for specialists
- Thai–foreign marriage registrationAffirmation of freedom to marry, embassy certification and district office registration
- Thai citizenship & permanent residenceEligibility tracks, supporting documents and interview preparation
- MFA legalization at the Department of Consular AffairsThe step after translation for documents used abroad or filed with an embassy
External authority references
- Thai e-Visa Official Portal (กระทรวงการต่างประเทศ) — ช่องทางยื่นวีซ่าเข้าประเทศไทยอย่างเป็นทางการ
- สำนักงานตรวจคนเข้าเมือง (Thai Immigration Bureau) — ระเบียบการต่อวีซ่า รายงานตัว 90 วัน และ re-entry permit
- สำนักงานคณะกรรมการส่งเสริมการลงทุน (BOI) — LTR Visa และ SMART Visa
- LTR Visa – Thailand Board of Investment
Authority requirements change. Verify with the receiving authority before filing, or ask our team by phone, LINE or email.