Non-Immigrant B (Business & Work)
Foreign nationals coming to work, run a business or attend business meetings with a Thai entity, supported by a Thai employer or business partner.
Single-entry Non-B is valid for travel within 3 months; the multiple-entry version is valid for 1 year.
Each entry gives up to 90 days; a one-year extension can then be requested in Thailand once the work permit is in place.
Eligibility and documents
- Employment certificate or invitation letter from the Thai entity
- Employer's company affidavit, shareholder list and financial statements
- Form WP.3 or the supporting set required by the Department of Employment
- Degree certificates and experience letters, usually requiring certification and translation
- Passport validity covering the requested period
Application process
- The employer prepares the corporate set and employment certificate
- Apply for the Non-B through the e-Visa system from abroad
- After entry, apply for the work permit at the Department of Employment or provincial office
- With the work permit issued, file TM.7 for a one-year extension of stay
- File 90-day reports throughout your stay
Extension of stay in Thailand
One-year extensions on TM.7, subject to registered capital, Thai-to-foreign staff ratio and the minimum salary table applied by the Immigration Bureau.
Common pitfalls
- Starting work before the work permit is issued — that is unauthorised employment
- Working outside the job title or workplace stated on the permit
- Degree documents not legalised and translated as required
- Employer failing the Thai-staff ratio or capital thresholds at extension time
FAQ — Non-Immigrant B (Business & Work)
Who can apply for the Non-Immigrant B (Business & Work)?
Foreign nationals coming to work, run a business or attend business meetings with a Thai entity, supported by a Thai employer or business partner.
What is the difference between visa validity and permitted stay?
Single-entry Non-B is valid for travel within 3 months; the multiple-entry version is valid for 1 year. — Each entry gives up to 90 days; a one-year extension can then be requested in Thailand once the work permit is in place.
Which documents are required?
Employment certificate or invitation letter from the Thai entity · Employer's company affidavit, shareholder list and financial statements · Form WP.3 or the supporting set required by the Department of Employment · Degree certificates and experience letters, usually requiring certification and translation · Passport validity covering the requested period
What is the application process?
The employer prepares the corporate set and employment certificate → Apply for the Non-B through the e-Visa system from abroad → After entry, apply for the work permit at the Department of Employment or provincial office → With the work permit issued, file TM.7 for a one-year extension of stay → File 90-day reports throughout your stay
How do I extend my stay in Thailand?
One-year extensions on TM.7, subject to registered capital, Thai-to-foreign staff ratio and the minimum salary table applied by the Immigration Bureau.
What are the most common reasons for refusal?
Starting work before the work permit is issued — that is unauthorised employment · Working outside the job title or workplace stated on the permit · Degree documents not legalised and translated as required · Employer failing the Thai-staff ratio or capital thresholds at extension time
Which authority decides the application?
Department of Employment for the work permit; Immigration Bureau for stay. — every approval is at the discretion of the deciding officer; we do not guarantee outcomes.
How much does your service cost?
Fees depend on the visa category, document volume and filing location. Contact our team by phone, LINE or email for a quotation for your case.
Other Thai visa categories
Talk to our team
Ask about eligibility and service fees for your own case by phone, LINE or email — Mon–Sat 9:00–18:00 ICT.
Contact us →Sources: Department of Employment · Immigration Bureau · Thai e-Visa (MFA) — criteria, processing times and permitted stay can change by official announcement, and every approval is at the discretion of the deciding officer. Please verify with the responsible authority before acting.
Official sources referenced
- • สำนักงานตรวจคนเข้าเมือง (immigration.go.th)
- • ระบบ e-Visa กระทรวงการต่างประเทศ (thaievisa.go.th)
- • กรมการจัดหางาน — ใบอนุญาตทำงาน (doe.go.th)
- • สำนักงานคณะกรรมการส่งเสริมการลงทุน BOI (boi.go.th)
Government fees and processing times on this page were last verified in July 2026 by our Notarial Services Attorneys registered with the Lawyers Council of Thailand. Figures follow published agency schedules, may change without notice, and actual turnaround depends on each authority's queue. Please reconfirm with the issuing authority before you file.