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 happens to the permit if I change employer or job title?
Authorisation is granted by reference to the employer, workplace and described duties, so a change in any of them normally requires a filing rather than a private arrangement. Continuing to work under the old permit after the change is treated as unauthorised work. Plan the change with the new employer before resigning, because the gap between employments also affects the underlying permission to stay.
What does the BOI channel change?
Promoted companies can request approved skilled or expert positions through the BOI e-Expert system and complete visa and work permit formalities at the One Stop Service Center. Conditions and validity depend on the promotion certificate and the approved position, so a company should confirm its certificate conditions before planning foreign headcount.
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.
Can I start working while the application is pending?
Working before authorisation is granted exposes both the worker and the employer to penalties under the foreigners' working management law. The safe course is to agree a start date conditional on issuance, and to keep the employment contract, the position description and the employer's registration documents consistent with what was filed, since discrepancies between the contract and the filing are a frequent cause of rejection.
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.
How do we get exact fees and timelines?
Processing times and official fees vary by application type, receiving office, document completeness and local queues, so fixed figures on a web page would be misleading. Our team quotes case by case after reviewing the actual documents — contact us by phone, LINE or email.
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.
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.
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
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
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