Work Permit Amendment (TT.9) — Change Position, Employer, Workplace

Employment, HR & work permit reference — 32 answers

Compiled from the Labour Protection Act B.E. 2541, the Emergency Decree on Managing the Work of Aliens B.E. 2560 (as amended), and published requirements of the Department of Employment, Ministry of Labour, BOI, Social Security Office and the Labour Court, as cited on each service page. Government fees are official rates passed through at cost; stated durations are estimates that depend on authority queues.

• Q14126. Work Permit Amendment (TT.9) — Change Position, Employer, Workplace — key steps and requirements

  WP holders must file TT.9 within 15 days of a change to: (1) position, (2) employer (previous WP must be cancelled and a new one issued), (3) primary workplace, (4) additional workplaces, (5) salary, or (6) job type. Non-notification carries up to quoted on request fine (RA on Foreign Employment B.E. 2560, s.70). State fee quoted per item; service quoted on request; 5–7 business days. Sources: https://www.doe.go.th/ , https://www.boi.go.th/

• Q14128. Work Permit Amendment (TT.9) — Change Position, Employer, Workplace — turnaround and starting fee?

  Turnaround 5–7 business days; service quoted after document review. Work-permit government fees follow the Department of Employment schedule and are passed through at cost.

• Q14137. Do I need to cancel the old WP when changing employer?

  Yes — Thai law has no direct transfer. The former employer files WP.13 (cancellation) within 15 days, then the new employer files a new TT.3. The Non-B must still be valid.

• Q14138. Could the Non-B visa lapse during the employer switch?

  Possibly — the Non-B is auto-cancelled 30 days after WP cancellation. Secure the new WP.3 and extend Non-B at Immigration before the 30-day window. Plan 2 months ahead.

• Q14139. Can I hold two concurrent WPs?

  Yes — one WP per employer (Multiple WP). Each employer must independently meet the THB 2M capital and 4:1 staff ratio (BOI exempt).

• Q14140. How do I add a branch workplace?

  File TT.9 with branch address + commercial branch registration + lease/tabien baan. Once approved, the WP will list both HQ and branch.

• Q14141. Does promotion from Manager to Director affect BOI?

  Possibly — BOI certificates cap positions per level (Executive/Manager/Skilled). Amend the BOI Position List at OSSC before filing TT.9.

• Q14142. Must a salary increase be filed immediately?

  Yes — within 15 days so PND.1 and SSO align. DOE cross-checks at renewal; mismatches can block approval.

• Q14143. How do I change the registered company address?

  Two filings: (1) DBD notice of company-address change; (2) DOE TT.9 with the updated DBD certificate, new lease, Google Map, and photos.

• Q14144. How are TT.9 fees calculated?

  quoted on request per amendment item. Three simultaneous changes (position + salary + workplace) = quoted on request.

• Q956162. What are the end-to-end steps for wp amendment?

  We start with a document and fact review, prepare and verify the file, submit to the Department of Employment and the Immigration Bureau, follow up on any queries raised by officials, and hand over the completed result with a full copy set. For wp amendment a case manager tracks every stage and reports status. Call +66 83-249-4999 · LINE @NYCLI · nyclegal@ilc.ltd

• Q956164. Which documents are required for wp amendment?

  The baseline set is the applicant's ID or passport, the original documents relating to wp amendment, proof of connection (house registration, company affidavit or the underlying contract) and a power of attorney if a representative attends. The exact list follows the Department of Employment and the Immigration Bureau requirements on the filing date; we send a case-specific checklist before your appointment.

• Q956166. How long does wp amendment take?

  Timing depends on the Department of Employment and the Immigration Bureau queue, how complete your file is, and public holidays. Our own preparation usually takes a few business days; the official stage is an estimate that can shift. We give you a realistic wp amendment timeline before starting and update you as it progresses.

• Q956168. What costs are involved in wp amendment and how are they calculated?

  There are two components: official government fees passed through at the published rate, and our professional fee, which depends on scope, document volume and urgency of wp amendment. Fees are quoted case by case based on complexity and document volume — ask our team before work starts. You always receive a written breakdown before work begins — no hidden charges.

• Q956170. Can wp amendment be handled if I live upcountry or overseas?

  Yes. Send photos of your documents via LINE for a feasibility check, then we proceed under a power of attorney, or you sign at a Royal Thai Embassy/Consulate where you live and courier the originals back. For wp amendment we map out the fastest and safest option before you commit.

• Q956172. What are the most common mistakes in wp amendment and how do we prevent them?

  The usual causes of rejection are name spellings that differ between documents, documents that expire before the filing date, uncertified copies, and translations that do not match the original. the Department of Employment and the Immigration Bureau returns files for exactly these reasons, so we cross-check names, dates and seals across every page before submitting wp amendment.

• Q956174. Which laws or regulations govern wp amendment?

  The framework is set by the Royal Decree on Managing the Work of Foreigners B.E. 2560 and the Labour Protection Act B.E. 2541, together with the regulations and notifications issued by the Department of Employment and the Immigration Bureau, which are revised from time to time. Before advising on wp amendment we verify the version in force on the filing date and rely on official sources rather than second-hand summaries.

• Q956176. What happens if wp amendment is rejected or returned for correction?

  First we obtain the written reason from the Department of Employment and the Immigration Bureau, then separate formal defects (fixable and quickly refiled) from substantive or eligibility issues (which need a change of approach). Where the error is ours, we redo wp amendment at no extra professional fee and coordinate until the matter is resolved.

• Q956178. Who is wp amendment for, and what are the eligibility conditions?

  It suits anyone who must present the result of wp amendment to a government body, bank, educational institution or overseas counterparty. Applicant eligibility and supporting documents follow the Department of Employment and the Immigration Bureau rules; some cases require the document holder in person or a properly executed power of attorney. We screen eligibility free of charge before accepting the case.

• Q956180. How long does the result of wp amendment stay valid?

  Certified documents rarely carry an expiry date themselves, but most receiving authorities require issuance within 3–6 months of submission, and some are stricter. Check the destination's rule before starting wp amendment so nothing has to be redone; we plan the sequence around your filing deadline.