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SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
SUWANVARA LAWFIRM
SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
Nakhon Sawan

Work Permit & Visa Lawyer in Nakhon Sawan — Non-B, Non-O, LTR, BOI Smart Visa, 90-Day Reports

Thailand's immigration regime ties three things tightly together: the visa (Non-B for work, Non-O for marriage/retirement, LTR for long-term residents, Smart Visa for BOI-promoted talent), the work permit (issued separately by the Ministry of Labour and only valid for the specific employer and role on the permit), and the 90-day report (required of all foreigners staying continuously for 90 days or more). Getting any one wrong invalidates the others. We handle the full application chain, the renewals, and — when things go wrong — overstay resolution and appeals against denied applications.

Scope of work permit and visa lawyer work in Nakhon Sawan

  • Non-B visa and work permit — initial application, renewals, change of employer
  • Non-O visa — marriage extension, retirement extension (50+)
  • LTR (Long-Term Resident) visa — wealthy global citizens, retirees, professionals, work-from-Thailand
  • BOI Smart Visa — for talent in BOI-targeted industries
  • Dependant visas for spouse and children, including school admission paperwork
  • 90-day reporting, re-entry permits, and address changes (TM47 / TM30)
  • Overstay resolution and appeals against denied applications

Process

  1. 1Eligibility review — match visa category to your situation and timeline
  2. 2Document collation — both yours and (for Non-B) the sponsoring company's
  3. 3Visa application at a Thai embassy/consulate abroad, or in-country change of visa
  4. 4Work permit application at the Ministry of Labour after arrival
  5. 5Ongoing compliance — 90-day reports, re-entry permits, renewals

Documents to prepare

  • •Passport with at least 6 months validity
  • •For Non-B: employment contract, company DBD certificate, VAT and tax certificates, sponsorship letter
  • •For Non-O marriage: marriage certificate, Thai spouse's ID and household registration
  • •For Non-O retirement: bank book showing THB 800k seasoned 2-3 months, or monthly income proof
  • •Education certificates (apostilled/legalised) for work permits

About our team in Nakhon Sawan

Coverage for Nakhon Sawan — the gateway to the North, where the Ping and Nan rivers converge to form the Chao Phraya. It is a rice-trading, agro-industrial, and logistics hub with a strong ethnic-Chinese commercial community. Suwanvara Law Firm advises on land, business contracts, labor, inheritance, and family matters here, served from our Bangkok branch nearby, with our team travelling regularly to appear at the Nakhon Sawan Provincial Court.

We have litigated for the business sector for over 40 years and understand Nakhon Sawan's rice economy — mills, cassava yards, and river-and-road logistics — as well as the family-business structures of its Thai-Chinese entrepreneurs. Our team works in Thai, English, and Chinese, is served from our nearby Bangkok branch, and travels to appear at the Nakhon Sawan Provincial Court and courts nationwide as scheduled.

Courts we appear at in Nakhon Sawan

  • •Nakhon Sawan Provincial Court
  • •Nakhon Sawan Municipal Court
  • •Nakhon Sawan Juvenile and Family Court

Covering Nakhon Sawan province and nearby areas including Uthai Thani, Chai Nat, Phichit, Kamphaeng Phet, and Lopburi

Past matters in Nakhon Sawan

  • Paddy-rice purchase contract and damages dispute between a mill and a trader in Mueang Nakhon Sawan district
  • Inheritance and agricultural-land division for a multi-generation Thai-Chinese family business

Related services in Nakhon Sawan

All Nakhon Sawan attorneys/criminal/civil/labor/family/business/taxVisa & Work Permit (overview)

Contact our Nakhon Sawan attorneys

We serve clients across Thailand. Initial consultation.

ContactWhatsApp+66 92 254 2045

Further reading — related guide

Immigration Guide
Thailand Visa & Work Permit: Complete 2026 Guide for Foreigners & Employers

How Thai visas, work permits, 90-day reporting, extensions, re-entry permits, and overstay rules fit together in 2026 — with the key routes: Non-B, Non-O retirement and marriage, BOI, SMART, LTR, and DTV. By a Thai law firm with 40 years of experience.

17 min read
Read the guide

Frequently asked questions — work permit and visa lawyer in Nakhon Sawan

3 questions answered

No. It is an offence to work in Thailand without a valid work permit, even if your visa allows residence. "Work" is interpreted broadly under the Working of Aliens Act — it includes unpaid work, signing contracts on behalf of an employer, and attending business meetings in some circumstances. We help time the application so there is no working gap.
The Long-Term Resident (LTR) visa is a 10-year visa introduced to attract four target groups: wealthy global citizens, wealthy pensioners, work-from-Thailand professionals, and highly skilled professionals in BOI-targeted industries. Each category has income, asset, or insurance thresholds. The LTR is significantly easier to maintain than the traditional Non-B/Non-O routes (annual rather than 90-day reporting; digital work permit; simplified renewals). We assess fit and handle the application.
Voluntary departure with payment of the overstay fine at the airport is generally the simplest path for short overstays. Longer overstays (90+ days) trigger automatic re-entry bans (one year for 90 days, escalating up to 10 years for 5+ year overstays). If you've been arrested for overstay, you need representation before the immigration tribunal — call before you make any statement. We've handled both short fix-ups and longer custodial matters.