What it means
Non-Immigrant Visa Category B (Non-B) is the standard Thai visa for foreigners who are employed, conducting business activities, or receiving investment income from a Thai-registered entity. It is the prerequisite visa for obtaining a Thai work permit (WP10) and is required for all formal employment in Thailand — whether at a multinational corporation, local SME, school, hotel, dive centre, or restaurant. Non-B is typically obtained as a 90-day single or multiple-entry visa at a Thai embassy or consulate abroad before your employment begins. Once in Thailand with a valid work permit, the Non-B is extended annually at immigration, tied to the work permit's validity and continued employer sponsorship. Most formal foreign employment relationships in Thailand — teaching, hospitality, corporate, technical, and management roles — operate within the Non-B plus WP10 framework.
Why it matters in Pattaya
Non-B visa holders are among Pattaya's largest segments of foreign residents: teachers at international schools, dive instructors, hotel management, restaurant chefs, yacht crew in marinas, and healthcare professionals at international hospitals all work under this framework. Pattaya employers with BOI promotional status — including some hotel groups and technology companies in the EEC zone — process Non-B work authorisation through BOI's One-Stop Service in Bangkok, which is faster and more efficient than standard immigration processing. The work permit under Non-B is employer-specific and occupation-specific: changing employers or significantly changing roles requires a new work permit application and associated Non-B documentation update before the transition takes effect.
When you need it
- Any formal paid employment for a Thai-registered employer, regardless of contract type (permanent, fixed-term, or consultancy).
- Director or management role in a Thai company where compensation — salary, profit share, or director fees — is received.
- Teaching at a Thai school or language centre — combined with MOE or standard WP10 depending on the institution type.
- Technical or professional work (engineering, healthcare, food production management) under an employer-sponsored appointment.
- Operating a boat or conducting commercial diving for a Thai-registered marine tourism company.
Common mistakes
- Assuming Non-B allows immediate work. Non-B is the visa; the WP10 work permit is the separate work authorisation. You cannot legally work until both the Non-B and the WP10 are in hand. The Non-B alone authorises your presence, not your employment.
- Changing employers without updating the work permit before starting. Your WP10 is employer-specific. Working for a new employer even one day before the new permit is issued is a violation of the Alien Working Act.
- Applying for Non-B from inside Thailand. Non-B must generally be obtained at a Thai embassy abroad before entering for employment. Exceptions exist for BOI-promoted positions and some conversions — check with an agent.
- Conflating Non-B with DTV for remote work. DTV suits foreign-income remote workers; Non-B is for Thai-employer employment. Using a DTV while receiving salary from a Thai company is illegal under both visa categories.
Full guide: Non-B Visa 2026 · WP10 · BOI · Work permit guide.
Related terms
WP10 · MOE · FET · BOI · SMART Visa
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