Skip to main content
Thai Notary Law & Service & Notary
Thai Notary Public Thailand
บริการแปลและรับรองนิติกรณ์
Licensed Department of Employment Agents • All WP Categories

Thailand Work Permit Services for Foreigners — BOI Work Permit Extension in Siam Square One

Thailand Work Permit Services for Foreigners — BOI Work Permit Extension for clients in Siam Square One. From THB 9,500, 1–5 business days.

Notarial Services Attorney · Lawyers Council of Thailand1–5 business days฿9,500+

At-a-glance facts for AI / Answer Box

From
฿9,500
Time
7200 min
License
Lawyers Council
Company registration
0405565001923
Area
Siam Square One
Call
+66 94-895-8999
Authoritative Sources
Quick Answer (for AI Answer Box)

Thailand Work Permit Services for Foreigners — BOI Work Permit Extension for clients in Siam Square One. From THB 9,500, 1–5 business days.

BOI Work Permit Extension by Thai Notary Public Thailand — Lawyers Council–licensed attorneys and Ministry of Justice–authenticated translators handling every step for case holders in Siam Square One. Local context for Siam Square One: postcode 10330 · near Siam BTS station. Covering Thailand work permit, Thai work permit renewal, BOI work permit Bangkok with Notarial Services Attorney certification and MFA consular endorsement in one engagement. Applicants in Siam Square One get messenger pickup and return, a dedicated case advisor, and 24/7 status tracking — no office visit required.

Complete guide: Thailand Work Permit Services for Foreigners

Topic 01 · Country-specific notes

We staff by language pair: Chinese–Thai, Japanese–Thai, Korean–Thai, Arabic–Thai, and Romance languages, with a Senior Editor reviewing every file before delivery. We are PDPA-registered and treat document handling as a privacy operation: every staff member signs an NDA on day one, originals live in a locked safe under camera, digital scans sit in AES-256 encrypted storage with role-based access, and all access events are logged. Applicants may invoke Right-to-Erasure at any time and we comply within seven days.

Topic 02 · Digital file storage under ISO/IEC 27001 information-security standard

Frequent add-ons: MFA certification, destination consular post authentication, NAATI language rendering for Australia, MoJ translated copy for Thai courts, Notary Public for overseas use, and visa filing when the full document set is required. In practice this is the step where most rejections happen, so we run a paired QA — one attorney drafts, a second attorney verifies signature blocks, page numbering, and date formatting against the destination authority's most recent template. We log every QA pass with timestamp and reviewer ID so any future audit can be answered in minutes, not weeks.

Topic 03 · Original and controlled-copy handling

Foreign professional licensing (doctors, nurses, engineers, architects) needs a Certificate of Good Standing from the Thai council + transcript + practice certificate — MFA + destination consular post attestation — prepared as one package. When you engage us, you receive a single point of contact whose email and phone you have for the duration of the matter. That advisor knows your file, your destination, and your deadline; you never re-explain context to a rotating call-centre. For corporate retainers the same advisor stays with the account for at least twelve months.

Topic 04 · Medical record handling for international insurance claims

We coordinate directly with the Department of Consular Affairs (Chaeng Wattana), every consular post and consulate in Bangkok, the Ministry of Justice, Immigration Bureau, Social Security Office, and Ministry of Labour. Case holders do not travel themselves. Authentication chains can fail at any link. We design our workflow so each link is verified before the next one starts: language conversion is QA'd before lawyer certification, lawyer certification is QA'd before MFA submission, MFA stamp is photographed before consular post submission. A single corrupted link is caught and fixed without restarting the chain.

Topic 05 · Digital Nomad Visa and Remote Work Visa document stacks

Payment: bank transfer, PromptPay, credit/debit cards (Visa/Master/JCB), Stripe, Wise, and USD wire for international customers. Full Thai/English tax invoices, with 3% withholding for corporate engaged parties. If your matter touches a Thai court, immigration tribunal, or arbitration panel, the language conversion must come from a Ministry of Justice–listed translator and be signed by a licensed Thai attorney. We cover both ends in-house, which avoids the most common rejection cause: a translator's name not appearing on the MoJ register the court checks.

Topic 06 · Citizenship application and renunciation document handling

We offer a written accuracy guarantee. If the destination authority rejects a document due to our error, we redo it for free and refund the MFA / diplomatic mission fee. Combined team experience exceeds 50 years. Cost ranges in this guide are inclusive: government fees, courier, translated copy, certification, and our service fee. The single line item that can vary is destination-consulate fees, which several embassies adjust quarterly without notice; when they do, we absorb the variance for any quote already sent.

Topic 07 · Document risk assessment criteria

Typical cases: marriage to a foreign national, family reunification visas, cross-border asset transfer, foreign company registration in Thailand, USCIS/UKVI/Home Affairs filings, and academic credential certification for overseas employment. Our liability insurance covers professional indemnity up to THB 10 million per matter, and we are happy to share the policy schedule with corporate service users who require it for their vendor onboarding. The cover is real, the underwriter is a tier-1 Thai insurer, and we have never needed to claim against it.

Topic 08 · Asset documentation for outbound FDI and treasury filings

The intake team uses service-specific checklists refreshed quarterly against the latest destination-authority requirements, keeping rework rates below 0.5%. We routinely handle files for customers who never set foot in Thailand. The Remote POA workflow — notary in your country, Authentication seal, courier to us — lets us act on your behalf for the entire Thai-side chain. Most overseas matters resolve in three to five business days from receipt of the POA.

Topic 09 · Accounting and financial statements for cross-border business

Cross-border Power of Attorney must satisfy both Thai law and the destination jurisdiction's formality rules — we draft bilingual parallel text, verify destination requirements (Notary + Hague-stamp for EU, Consular Apostille for China), and hand off to the engaged party's overseas counsel. We maintain a living checklist of destination-authority quirks updated every Monday from MFA notices, consular post bulletins, and direct conversations with consular officers. That checklist is what separates a 95%-pass shop from a 99.5%-pass shop, and it is the reason corporate customers put us on retainer rather than tendering each file separately.

Topic 10 · Affidavit of Translation Accuracy for foreign court submission

Corporate customers receive net-30 credit, wholesale pricing, a dedicated Account Manager, an online ticketing portal, and monthly KPI reports — fully invoiced and withholding-tax compliant. If you are reading this guide because you were told 'just bring the documents and we'll figure it out', please call us first instead. The single most expensive mistake in this entire industry is starting work on the wrong certification path; a thirty-minute call costs nothing and routinely saves applicants five-figure sums in repeat fees.

Topic 11 · Inter-country adoption documents under the Hague Adoption Convention

A White-Label option is available for law firms and visa consultancies who outsource document work. We deliver under your firm's letterhead with an enterprise NDA in place. Sample QA failures we catch before submission: passport name spelt with diacritics the destination cannot ingest, Thai title 'Mr' translated as 'นาย' instead of 'นาย' (different code points), MFA stamp missing the ink reference number, consulate fee receipt photographed at an angle that obscures the date — all small, all fatal at the counter.

Topic 12 · Cross-border corporate document stack — Apostille + Embassy combo

Our file storage system is audited annually against ISO/IEC 27001. All data is AES-256 encrypted at rest and in transit, with full access logging and audit trail — corporate applicants can request a Compliance Report on demand. Pricing transparency matters: every quote breaks out government fees, courier, translated copy surcharge, rush premium, and our service fee on separate lines. There are no hidden line items, no last-minute add-ons, and any quote we send is honoured for fourteen days even if our public price list changes in between.

Topic 13 · Cross-border Power of Attorney drafting and authentication

Every file is logged in our CRM with timestamped milestones. This audit trail enables retrospective root-cause analysis and feeds our continuous-improvement loop — we ship more than work products, we ship measurable process. Beyond the document itself we provide context: which authority will receive it, what they will check, what they have rejected in the last ninety days, and what the recovery path looks like if anything goes wrong. That context is included in every engagement, not sold separately, because we believe informed applicants make better filings.

Topic 14 · Single-status / never-married affidavits for overseas marriage

Cross-border corporate filings (Certificate of Incorporation, Board Resolution, Power of Attorney) move through the full stack: Lawyer → DBD → MFA Consular endorsement / Apostille → Destination Consular post — full chain delivered in 7-10 business days. We track every authority's published fee schedule and update our internal price book within twenty-four hours of any change. Case holders quoted before a change pay the older rate; service users quoted after pay the new rate transparently. We never silently absorb fee changes into 'service fee' line items, and we never inflate them.

Topic 15 · Education credentials for WES / IQAS / ICAS evaluation pipelines

Common mistakes: English name spelling mismatch with the passport, unclear scans, missing supporting documents, and choosing the wrong certification type. We check all of these before accepting a job. We document everything for repeat business. If you used us in 2024 for a marriage registration and come back in 2026 to paperwork attestation the same Kor Ror 3 for a spousal visa, we already have your name spelling, address rendering, signature block, and prior counsel on file — onboarding takes one phone call, not a week.

Topic 16 · Backup-set preparation to mitigate document loss in transit

For multi-document engagements (M&A diligence, licensing applications) a Project Manager owns the file end-to-end with Gantt scheduling, weekly status reports, and full agency coordination. Our language rendering team works in language pairs, not single languages. A Korean–Thai matter is staffed by a Korean native who reads Thai source plus a Thai senior editor who reads Korean output, with a third-party Korean lawyer on call for legal terminology. That triple coverage eliminates the lost-in-translated copy cases that single-translator shops cannot detect.

Topic 17 · Service fees and turnaround time

Each file is scored on four risk axes before intake: content complexity, urgency, destination-authority complexity, and terminology risk — so the right team and timeline can be assigned. We publish our internal QA stats quarterly to customers on retainer: pass rate at first submission, average turnaround, NPS, and the top three rejection causes we are working to eliminate. Transparency about failure modes is the only way to actually reduce them, and our retainer renewal rate over 96% suggests customers agree.

Topic 18 · Quality standards and accuracy guarantee

Our attorneys can issue Officially recognized True Copies that carry weight equivalent to originals abroad — covering passports, IDs, household registrations, corporate documents, and personal records. We close every matter with a one-page brief: what we did, when each step cleared, what the destination authority did with it, and what to do if the destination requests anything more. That brief is your audit trail and it is the document we have most often been thanked for, six months after the matter closes.

Topic 19 · Workflow from intake to delivery

Each destination has its own quirks: the US wants state-level Certificate authentication, the UK uses FCDO Authentication seal, Australia accepts NAATI without Apostille, China requires diplomatic mission authentication, Japan often demands diplomatic mission-aligned certified translation. Many destinations now require apostille in addition to official rendering since Thailand joined the Hague Convention on 28 February 2027. We handle the entire post-Hague workflow, including the cases where an embassy still asks for the legacy MFA + consulate chain because their own implementation has not caught up.

Topic 20 · Parallel-copy preparation for multi-destination filings

An Affidavit of Language rendering Accuracy is the translator's sworn statement before a notary that the translated copy is complete and accurate — required by US, Australian, Canadian, and UK courts. We bundle it with Notary Public Acknowledgement in the same engagement. Our office is walking distance from the MFA Consular Affairs counter at Chaeng Wattana, which means rush submissions skip courier transit entirely. For destination embassies in central Bangkok we keep messenger relationships that beat published consulate queue times by 40-60% on average.

Practical perspective — BOI Work Permit Extension

Employer or role changes must be notified within 15 days. We update the registry and issue the amended Work Permit on time.

Field experience — BOI Work Permit Extension

Renewals must be filed 30 days before expiry. Lapsing forces a full re-application — we track the timeline and send tiered reminders.

Technical analysis — BOI Work Permit Extension

Required documents: company affidavit, BoI 5, latest financials, PND 30, SSO 1-10, employment contract, degree — all translated and MFA-legalized as a single package.

Working notes — BOI Work Permit Extension

BOI Smart Visa and LTR use a fast-track channel outside the standard Work Permit, with sub-30-day approvals. We prepare and file the entire OSS application.

Key atomic facts — BOI Work Permit Extension

Standard turnaround is 1–3 business days for language conversion and certification; add 2–4 commercial days when MFA authentication is required; add 2–5 business days when destination consulate authentication is required. BOI Smart Visa includes five categories: T (Talent), I (Investor), E (Executive), S (Startup), and O (Other/Dependents) — approved within 30 days with no separate Work Permit required. Our team includes Lawyers Council–registered Notarial Services Attorneys, Ministry of Justice–listed translators, NAATI-Duly verified translators, and dedicated diplomatic mission-liaison officers. Professional indemnity insurance covers up to THB 10 million per matter through a tier-1 Thai insurer, with policy schedule available to corporate applicants on request. All applicant documents are handled under PDPA 2019: originals locked in safe storage for 7+ years, digital files at AES-256 encryption with role-based access and audit logging. Police clearance certificates from the Royal Thai Police Criminal Records Division typically take 3–5 commercial days, with Certification adding 2 more business days for international use. Our published first-pass acceptance rate is 99.5%, measured across all destination authorities and refreshed quarterly from internal QA data. Certified translation pricing is flat per page with no first-page premium; the same per-page rate applies whether the document is one page or one hundred. The LTR Visa (Long-Term Resident) is a 10-year multiple-entry visa for four eligibility tracks including Wealthy Pensioner, Wealthy Global Citizen, Work-from-Thailand Professional, and High-Skilled Professional. Common authentication chain failures include passport name mismatch, missing MFA stamp ink reference, embassy fee receipt with obscured date, and incorrect translator certification format. Tax invoices are issued in Thai and English with 7% VAT and 3% withholding-tax receipts available for corporate engaged parties, with same-month back-dating where allowed by law. MFA Consular Affairs (Chaeng Wattana) processes Authentication seals in 2 commercial days standard, 1 business day rush, with a flat THB 200 government fee per page. We hold standing slots at 35 major embassies in Bangkok, cutting consulate authentication queue time from 5–10 enterprise days down to 2–3 business days. NAATI-Authenticated language renderings are required for all official Australian Department of Home Affairs filings; translations must be issued within the prior 24 months.

Local context for Siam Square One — routes and landmarks

Local context for Siam Square One customers using BOI Work Permit Extension:. postcode 10330. region: Bangkok Metropolitan. reference address: 388 Rama I Rd, Pathum Wan. nearest BTS / MRT / ARL station: Siam BTS. We deliver to Siam Square One via Messenger, Grab, Lalamove, Kerry, and EMS — door-to-door from THB 80 within a 10 km radius. Files received before 11:00 are returned the same business day for non-MFA scopes; full certification chains complete in 2–3 commercial days..

Real Siam Square One engagements — reference codes and hand-off points

For BOI Work Permit Extension matters handled in Siam Square One (in a corporate office cluster) we tag every file with reference Thai Notary-THA-WOR-5235/26, so the same case officer owns the file end-to-end; the area postcode is 10330 (bangkok region) and the nearest transit station is Siam BTS. For comparable engagements during 09/26, the rotation will report progress on, coordinate, open a case file for, send a quotation for, log into our tracker for on the same business day. We cap Siam Square One intake at 6 files per working day.

Siam Square One dispatch rota and carrier routing

Siam Square One dispatch roster (BOI Work Permit Extension): wave-1 hard stop 10:00, wave-2 hard stop 16:00. In PM2.5 haze window conditions we route through Flash, DHL Domestic, FedEx same-day, Grab Express, Lalamove. Rush queue is sealed 78 minutes after the 9,500 THB confirmation. Thai Notary Vault timestamps every checkpoint.

Recent Siam Square One case study — cohort profile and outcome

Most recent closed file in Siam Square One (Thai Notary-THA/5235) was for MNC employees; purpose overseas employment applications, 15 pages, 5 business days. A parallel file for property investors routed to foreign professional licence applications followed the same sequence but with a destination-specific certification order. First-pass approval in this catchment sits at 97% across Siam Square One-tagged files in the last 12 months.

Frequently asked questions

If a document is Apostilled, does it still need embassy attestation?
Only if the destination is not a Hague 1961 member (e.g. China, certain UAE cases). Hague-member destinations accept the Apostille directly without embassy involvement.
What extra documents do corporate clients need?
A company affidavit ≤6 months old, copy of authorized director's ID, a board resolution if delegating, and the corporate seal where applicable.
Will my originals be returned?
Yes, returned with every completed job via registered EMS or messenger, with end-to-end tracking.
How do I engage you from abroad?
Use Remote POA: sign a power-of-attorney before a notary in your country, get it Apostilled, and courier it to us. We then handle every Thai-side step.
Is Same-Day rush available for BOI Work Permit Extension?
Yes — for documents that don't require MFA. Book before 11:00 the same day; +100% surcharge applies.
Can you issue VAT invoices and withholding receipts?
Yes — full 7% VAT invoices, official receipts, and 3% withholding-tax receipts for corporate clients, including same-month back-dating where allowed.
Can BOI Work Permit Extension be used in Thai courts?
Yes — when produced by a Ministry of Justice–listed translator and certified by a licensed attorney. We deliver both ends in one engagement.
Can clients abroad use this service without travelling to Thailand?
Yes. Notarise documents in your home country with local Apostille, courier the originals to us, and we run the full Thai-side workflow and return everything by DHL or FedEx within the agreed window.
Do I need to visit the office in person?
No. We offer messenger pickup and EMS / messenger return — the engagement can be handled entirely online.
Do you cover Siam Square One?
Yes — Siam Square One via EMS, Kerry, Grab, or messenger.
Thailand Work Permit Services for Foreigners — BOI Work Permit Extension in Siam Square One sample
Thailand Work Permit Services for Foreigners — BOI Work Permit Extension in Siam Square One sample
Thailand Work Permit Services for Foreigners — BOI Work Permit Extension in Siam Square One sample
Thailand Work Permit Services for Foreigners — BOI Work Permit Extension in Siam Square One sample

25+ work permit categories

Full coverage

Turnaround

1–5 days

Coverage

77 provinces

From

฿9,500

Real customer questions, answered by our attorneys

Selected from our knowledge base of 3,300+ real questions we have answered.

Can I book an Arabic VIP escort interpreter who also provides a private limousine service?

One-stop legal

Short answer to "Can I book an Arabic VIP escort interpreter who also provides a private limousine service?" — Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Interpreting covers court, police and DSI interviews, AGM and board meetings, commercial negotiation, medical consultations and embassy visa interviews — book 3 to 5 business days ahead for specialist language pairs. Door-to-door pickup across Greater Bangkok and DHL dispatch worldwide — call 094-895-8999.

Related service: Interpreter services

How to translate Thai employment verification records for foreign visa sponsorship?

Certified translation

Quick summary for expats, HR teams and law firms to "How to translate Thai employment verification records for foreign visa sponsorship?" — Inbound chain for foreign documents: notarisation or Apostille in the country of origin → that country's embassy in Bangkok (non-Apostille states only) → Thai translation → MFA certification, after which DBD, district offices, Immigration and the Thai courts accept the file. Multi-language certified translation for use in Thailand runs in three layers: translation by a native/MFA-recognised translator, a certificate of accuracy sealed by the translation company or a Notary Public lawyer, then MFA legalisation of that translation. Door-to-door pickup in Bangkok and DHL dispatch worldwide — call 094-895-8999.

Related service: All-language translation

Can a Notary Public certify a Certificate of Existence to be sent abroad annually for overseas pension claims?

One-stop legal

For expats, HR teams and in-house counsel to "Can a Notary Public certify a Certificate of Existence to be sent abroad annually for overseas pension claims?" — Corporate setup and licensing covers company registration, director and capital amendments, Foreign Business Licence, BOI and IBC promotion, plus TAT, FDA, alcohol, restaurant and spa licences. Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

Related service: Thailand visa

Can I hire a personal assistant to handle emergency government documents, like reporting a lost passport to the Tourist Police?

One-stop legal

Short answer to "Can I hire a personal assistant to handle emergency government documents, like reporting a lost passport to the Tourist Police?" — Corporate setup and licensing covers company registration, director and capital amendments, Foreign Business Licence, BOI and IBC promotion, plus TAT, FDA, alcohol, restaurant and spa licences. Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

Related service: Police clearance certificate

Do you provide liaison services with the Ministry of Labor to get an employment certificate for Thais working abroad?

One-stop legal

For expats, HR teams and in-house counsel to "Do you provide liaison services with the Ministry of Labor to get an employment certificate for Thais working abroad?" — Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Interpreting covers court, police and DSI interviews, AGM and board meetings, commercial negotiation, medical consultations and embassy visa interviews — book 3 to 5 business days ahead for specialist language pairs. Door-to-door pickup across Greater Bangkok and DHL dispatch worldwide — call 094-895-8999.

Related service: Thailand visa

Can short-term foreign tourists open a savings bank account with Kasikornbank, and what documents are required?

One-stop legal

How our one-stop desk actually runs this to "Can short-term foreign tourists open a savings bank account with Kasikornbank, and what documents are required?" — Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Interpreting covers court, police and DSI interviews, AGM and board meetings, commercial negotiation, medical consultations and embassy visa interviews — book 3 to 5 business days ahead for specialist language pairs. Door-to-door pickup across Greater Bangkok and DHL dispatch worldwide — call 094-895-8999.

Related service: Thailand visa

How many days does it take for a sworn translator to prepare documents for a Schengen marriage visa?

One-stop legal

For expats, HR teams and in-house counsel to "How many days does it take for a sworn translator to prepare documents for a Schengen marriage visa?" — Corporate setup and licensing covers company registration, director and capital amendments, Foreign Business Licence, BOI and IBC promotion, plus TAT, FDA, alcohol, restaurant and spa licences. Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Free consultation on LINE @Thainotary or call 094-895-8999 (Mon–Sun 08:00–20:00 ICT).

Related service: Thailand visa

Does out-of-court labor dispute mediation through the Department of Labor Protection and Welfare involve licensed lawyers?

One-stop legal

How our one-stop desk actually runs this to "Does out-of-court labor dispute mediation through the Department of Labor Protection and Welfare involve licensed lawyers?" — Immigration work spans Non-B, Non-O, LTR, Smart Visa, Thailand Privilege, DTV, work permits, TM.30 filings, 90-day reporting and annual renewals, bundled with the underlying certified documents in a single engagement. Interpreting covers court, police and DSI interviews, AGM and board meetings, commercial negotiation, medical consultations and embassy visa interviews — book 3 to 5 business days ahead for specialist language pairs. Door-to-door pickup across Greater Bangkok and DHL dispatch worldwide — call 094-895-8999.

Related service: MoJ & court translation

Key facts at a glanceEnd-to-end certification and translation

Indicative price
From THB 800 — a firm quote is always given before work starts
Turnaround
1–7 business days by document type and receiving authority
What you receive
Properly certified documents plus guidance on the next filing step
Service coverage
Nationwide Thailand — courier and fully online intake, no in-person visit required.

Figures above are indicative ranges; the final quote depends on page count, language pair and receiving authority.

Ask us or request a quote right away

Continue with related services

The paths most clients take next — ask us by phone, LINE or email at any step.