A national of Japan applying for the Non-Immigrant B business/work visa — how should the supporting documents be translated and certified?

The scope of this answer is “A national of Japan applying for the Non-Immigrant B business/work visa”, so the answer below starts with what this case actually needs before setting out the general rules. After filing, follow up on the cycle the office states rather than waiting past the deadline. Record the reference number of each certification layer; it is the fastest way to trace status. Keep a copy of every source document plus the receipt or docket from each step. With a fixed filing date, count backwards from it and book each certification step in reverse. Leave buffer time in case a translation has to be amended or a source document re-issued. 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 common failure in this group of cases is a translation that does not match the certification type required. The most frequent cause of delay in this group is missing supporting documents on the first submission. The terms that frame this page are national · Japan · applying · Non-Immigrant. The specifics here are destination: Jp, and those decide which translation and certification level applies. Supporting documents issued abroad — police clearance, marriage and birth certificates, qualifications or financial papers — normally need translation into Thai or English by an accountable translator and the certification the receiving office specifies, usually legalisation at the Department of Consular Affairs and/or the issuing country's embassy. On Apostille: Thailand deposited its instrument of accession on 30 June 2026, but the Convention is not yet in force for Thailand, so the working route is still consular legalisation — the Department of Consular Affairs first, then the destination embassy. Fees and scheduling depend on the number of documents, the source language, which authority must certify them and the destination country; we confirm scope in writing before starting. Send the checklist you were given, the applicant's nationality and the post or 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