Thailand Work Permit — End-to-End by a Licensed Bangkok Law Firm

Thailand Work Permit — a complete legal and procedural reference

A Thai Work Permit (ใบอนุญาตทำงาน) is the statutory authorisation that allows a non-Thai national to lawfully perform any activity — paid or unpaid — for an employer in Thailand. It is regulated by the Royal Decree on Foreign Workers' Employment Management B.E. 2560 (2017) and administered by the Department of Employment under the Ministry of Labour. Working in Thailand without a valid permit exposes the worker to a fine of up to THB 50,000 and immediate deportation, and exposes the employer to a fine of up to THB 100,000 per worker per offence.

Thai Notary Law coordinates the entire Work Permit lifecycle — from non-immigrant visa preparation, employer documentation, notarisation and MFA legalisation of foreign documents, BOI / Smart Visa channels, through to the permit application, in-person collection at the One Stop Service Centre, and the annual renewal cycle. This page is the long-form English reference our clients use to understand what is legally required, what timelines to expect, and which documents must be notarised, translated and legalised before the application is filed.

The legal framework — Royal Decree B.E. 2560 and related regulations

The current Work Permit regime is governed primarily by the Royal Decree on Foreign Workers' Employment Management B.E. 2560 (2017), as amended in 2018, together with Ministerial Regulations issued by the Ministry of Labour. The Royal Decree consolidated several earlier statutes and significantly increased penalties on both employers and workers. It also defined 40 occupations that are statutorily reserved for Thai nationals — foreign nationals cannot obtain a Work Permit for any of these occupations regardless of qualification.

Permit categories that we routinely handle include: ordinary employment (general WP-3 / Tor Tor 8 channel for non-BOI companies); BOI-promoted employment (filed through the BOI e-Expert system with significantly faster turnaround); Smart Visa categories T, I, E, S and O (which combine work authorisation with the visa itself); urgent / 15-day permits for short-term technical assignments; teacher permits coordinated with the Office of the Teacher Civil Service Commission; and entertainer / media permits with additional Ministry of Culture clearance.

Every Work Permit must be matched to a specific employer, a specific job description and a specific physical location. Moving employer, changing job duties or relocating to a different province without an amendment is a separate offence. We help corporate clients structure employment so that legitimate operational flexibility (multi-site work, project deployment, secondment) is reflected in the permit from day one.

The end-to-end Work Permit chain

Most rejections we see come from clients trying to file the Work Permit application before the supporting documents are notarised, translated and legalised. The Work Permit chain runs in parallel with the visa chain, but it has its own document set and its own deadlines.

• Step 1 — Non-Immigrant B (or BOI / Smart) visa issued by the Royal Thai Embassy in the worker's country of nationality, or converted in-country from a tourist visa where eligible
• Step 2 — Employer documentation refreshed (DBD affidavit, VAT registration, social-security registration, audited financials, organisation chart)
• Step 3 — Worker documentation: passport, degree certificate, transcript, CV, prior employment letters — notarised in the country of origin, then legalised by the Thai embassy abroad or apostilled (since Thailand acceded to HCCH on 30 June 2026, in force 28 February 2027)
• Step 4 — Certified Thai translation of every foreign document, sworn before a Notarial Services Attorney
• Step 5 — Work Permit application (Tor Tor 1) filed at the Department of Employment provincial office, BOI One Stop Service Centre at Chamchuri Square, or the relevant Special Economic Zone office
• Step 6 — In-person collection of the blue book Work Permit, payment of statutory fees (THB 100 application + THB 750 to 3,000 per year depending on duration)
• Step 7 — 90-day reporting, annual extension and synchronisation with the Non-B visa extension

Services included in our Work Permit engagements

We are a full-service law firm, not a visa runner. Every step that touches notarisation, legalisation or legal certification is handled internally by a licensed Notarial Services Attorney — there are no hand-offs to outside agents.

• Non-Immigrant B / BOI / Smart Visa preparation and embassy liaison
• Certified true copies of company documents (DBD affidavit, articles of association, shareholder list, board resolution)
• Notarised certified translations of degree, transcript, CV and reference letters
• MFA Consular legalisation and HCCH Apostille of foreign-issued documents
• Filing the WP-3 / Tor Tor 1 / BOI e-Expert application
• Walk-the-file representation at the One Stop Service Centre and provincial DOE offices
• 90-day reporting and annual Work Permit + visa extension
• Change-of-employer, change-of-position, additional-location amendments
• Smart Visa T / I / E / S / O endorsements with the relevant qualifying agency
• Urgent 15-day technical-work permits for short-term assignments

Our standard workflow

We work in fixed-fee packages with a written timeline. A typical end-to-end engagement from kick-off call to blue book in hand is 4 to 8 weeks for ordinary employment and 7 to 14 working days under the BOI One Stop channel.

1. Kick-off call to confirm employer eligibility, worker profile, target start date and reserved-occupation screening
2. Document checklist issued with country-specific notarisation and legalisation instructions for the worker's home country
3. Employer file refreshed at our office (DBD affidavit, VAT, SSO, financials)
4. Notarised certified translations executed in our office — usually 24 to 48 hours per document set
5. Visa application coordinated with the Royal Thai Embassy abroad (or in-country conversion)
6. Work Permit application filed; we attend on the worker's behalf where the law allows, and accompany the worker for biometrics where it does not
7. Blue book Work Permit collected, scanned, and delivered with a calendar of statutory follow-ups (90-day report, annual extension, social-security registration)

Common nationalities, sectors and locations we serve

We process Work Permits for clients from every major source country. The top ten by volume in our practice are Japan, China (PRC), the United States, the United Kingdom, Germany, India, the Philippines, South Korea, France and Australia, but we handle EU, ASEAN, Middle Eastern, African and Latin American applicants on a regular basis. Specific documentation quirks — such as Chinese degree authentication via CHESICC, Japanese koseki tohon, German Apostille from the regional Regierungspräsidium, Indian HRD attestation — are handled in-house by attorneys with country-specific experience.

Sector-wise we are most active in tech / SaaS (Smart Visa T and S), manufacturing and automotive (BOI), education (international schools and universities), healthcare (medical specialists and dentistry), hospitality (chefs and hotel executives), media and entertainment, and professional services. Provincial coverage extends across all 77 provinces through our branch and agent network, with high volume in Bangkok, Chonburi (Eastern Economic Corridor), Chiang Mai, Phuket, Rayong and Samui.

• Bangkok — One Stop Service Centre at Chamchuri Square Tower (BOI / Smart Visa)
• Bangkok — Department of Employment, Mitmaitri Road (ordinary WP)
• Chonburi / Rayong — Eastern Economic Corridor One Stop
• Phuket — Provincial Employment Office (high volume in marine and hospitality)
• Chiang Mai — Provincial Employment Office (digital nomad and education sectors)
• Songkhla — Hat Yai branch for southern provinces and Malaysian-border traffic

Ordinary WP vs BOI One Stop vs Smart Visa — which channel fits you?

The ordinary Work Permit channel is open to any registered Thai company that meets the quote on request (phone / LINE / email) million paid-up capital and 4-Thais-per-foreigner ratio. Turnaround is 7 to 10 working days at the Department of Employment after the file is complete, and the permit is co-terminus with the Non-B visa. This is the right channel for most SMEs that do not qualify for BOI promotion.

The BOI channel is reserved for companies that hold a Board of Investment promotion certificate or qualify under specific BOI categories. Filing is done through the BOI e-Expert online system; turnaround is 3 working days for approval and a same-day Work Permit collection at the One Stop Service Centre. Capital and Thai-staff ratios are relaxed or waived. Fees are higher, but for technology, R&D and EEC investors the speed and flexibility usually justify the cost.

Smart Visa categories T (Talent), I (Investor), E (Executive), S (Startup) and O (dependents) combine the visa and Work Permit in a single 4-year, multi-entry endorsement. There is no 90-day reporting and no Work Permit book — a Smart Visa stamp in the passport is itself the work authorisation. The qualifying agency varies by category: DEPA for T digital, NIA for S startup, BOI / NSTDA for T science, NSTDA for E executive, and so on. We pre-screen eligibility and prepare the qualification dossier before any application is filed.

Pricing — what a complete Work Permit engagement costs

We quote in fixed-fee packages so there are no surprise top-ups. Government fees are paid through us at cost and itemised on the invoice. A typical end-to-end engagement (visa abroad → notarisation → translation → Work Permit → collection) for an ordinary employment case is THB 35,000–55,000 in professional fees plus quote on request (phone / LINE / email) in government fees per applicant. BOI cases run THB 45,000–70,000 professional plus THB 4,000–6,000 government fees, with significantly faster turnaround.

Smart Visa engagements are quoted per category because the qualifying agency dossier varies in complexity; budget THB 70,000–150,000 professional plus the agency endorsement and visa fees. Add-ons such as dependent visas, accompanying spouse Work Permit, school enrolment letters and Yellow Book / Pink Card registration are quoted on a flat-fee menu.

• Ordinary WP package — THB 35,000–55,000 + government fees
• BOI / IEAT One Stop package — THB 45,000–70,000 + government fees
• Smart Visa T / I / E / S / O package — THB 70,000–150,000 + agency / visa fees
• Urgent 15-day technical permit — THB 18,000 + government fees
• Annual extension (visa + WP) — THB 18,000–25,000 + government fees
• Dependent Non-O visa per family member — THB 12,000 + government fees
• Certified Thai translation per page — quote on request (phone / LINE / email) depending on language

The mistakes that most often trigger rejection or fines

• Working under a tourist visa or visa exemption — even attending a one-day meeting can be cited
• Foreign degree submitted without country-side notarisation and Thai embassy legalisation (or Apostille post-28 Feb 2027)
• Translation done by an uncertified agency without Notarial Services Attorney certification — DOE will refuse the file
• Job description on the application differing from the actual work performed, exposing both worker and employer at inspection
• Working at a client site or branch not listed on the Work Permit
• Late 90-day report — THB 2,000 fine, escalating, and a black mark on the visa file
• Employer falling below the THB 2 million paid-up / 4-Thai ratio mid-cycle — extension will be refused
• Mixing personal income from a side activity (consulting, dropshipping, content creation) without an additional permit

Detailed FAQ for foreign workers and HR teams

Start your Thailand Work Permit with a written fixed-fee quote

Send us the worker's CV, passport scan and the company's DBD affidavit over LINE or email; we will return a written eligibility opinion, channel recommendation (ordinary / BOI / Smart Visa) and fixed-fee quote within one business day. All Work Permit engagements are run by a licensed Notarial Services Attorney with English-language case management.