Changing employer or position on a work permit — what should you know about notarial signature certification?

The issue to settle here is “Changing employer or position on a work permit”, so it covers both the requirements attached to this document set and the order the steps must follow. For documents going abroad, include international shipping time in the plan. If multiple certified sets are needed, order them all in the first round to avoid re-queuing. Before starting, count the number of certified sets needed before work starts, because extra sets restart the certification steps, then verify the source document is still within any validity window the recipient applies, then check that names are spelled identically to the passport or ID card on every page. The point to fix before starting is the real deadline, so the steps can be scheduled backwards from it. The deciding factor is the receiving body's requirement, not only the format of the Thai-side document. The terms that frame this page are Changing · employer · position · work. After certification, scan the full set before it leaves your hands. Note who signed each certification and on what date for later reference. If the receiving body confirmed its requirements by email, keep that message with the file. Powers of attorney and declarations intended for use abroad are usually signed before a Notarial Services Attorney registered with the Lawyers Council of Thailand, then passed to the Department of Consular Affairs and the destination embassy for further legalisation. Thailand deposited its instrument of accession to the Apostille Convention on 30 June 2026, but the Convention is not yet in force for Thailand, so embassy and Department of Consular Affairs legalisation remains the working route. ILC handles the document side only — certified translation, notarial signature certification and legalisation runs at the Department of Consular Affairs or an embassy. ILC is not the deciding authority and cannot guarantee an approval. Cost and lead time depend on page count, language pair and the certification steps the receiving authority requires, so every file is quoted before work starts. Send the checklist you were given, the applicant's nationality and the office you will file with via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th