The Non-B Visa: Your Gateway to Legal Work in Thailand
The Non-Immigrant B visa allows foreign nationals to enter Thailand to work, conduct business, or engage in professional activities. But the visa alone does not authorize employment. You need a separate work permit. This guide explains the two-part process, current costs, and what your employer needs to do.
Working in Thailand without proper visas and permits is not just risky: it is illegal. Penalties include hefty fines, deportation, and bans on re-entry. The Non-B visa combined with a work permit is the legitimate path.
Non-B Visa Types and Costs
Thailand offers two Non-B visa options depending on your needs and the employer's situation.
Single Entry Non-B: Costs 2,000 THB and is valid for three months. This option works if you plan to leave Thailand or renew before returning. Suitable for short-term work assignments or if your employment situation is temporary.
Multiple Entry Non-B: Costs 5,000 THB and is valid for one year. You can exit and re-enter Thailand multiple times without losing your visa validity. This is the more practical choice for long-term employment.
The Work Permit: Non-Negotiable Requirement
This is the critical detail many people miss: the visa alone does not permit you to work. Once you arrive in Thailand on your Non-B visa, you must apply for a separate work permit from the Department of Employment (DOE) before you can legally accept a job.
Work Permit Cost: 3,000 THB for a one-year permit, 1,500 THB for six months, or 750 THB for three months. Add a 100 THB application fee.
Processing Time: 7 to 14 business days from the Department of Employment.
Without a valid work permit, you are technically working illegally even with a Non-B visa. Fines start at 10,000 THB and can exceed 100,000 THB. Repeat violations result in deportation and multi-year re-entry bans.
What Your Employer Must Provide
In Thailand, the employer is responsible for initiating and supporting the visa and work permit process. This is not your burden alone.
Minimum Requirements: Your employer must have at least 2 million THB in registered capital per foreign employee. This is a hard legal requirement.
Thai Staff Quota: Companies must maintain a ratio of at least 4 Thai employees to every 1 foreign employee. If a company wants to hire 3 foreign staff, they must employ at least 12 Thai nationals.
Documents Your Employer Provides:
- Completed visa application form
- Company business registration and tax identification number
- Recent financial statements proving the 2 million THB capital requirement
- Invitation letter (offer letter) specifying your position and salary
- WP.3 form (preliminary work permit approval) from the Thai Department of Employment
Your Personal Documents
You will need to provide:
- Valid passport with at least 6 months validity remaining
- Completed visa application form (TM.88)
- Recent passport-sized photo (4x6 cm)
- Proof of travel arrangements (flight booking or hotel confirmation)
Processing Timeline
Non-B Visa: Processing through the Thai embassy typically takes 1 to 2 weeks.
Work Permit: Once you arrive in Thailand on your Non-B visa, the DOE processes work permit applications within 7 to 14 business days.
Full timeline from decision to employment: 3 to 4 weeks if everything is in order. Plan ahead.
Common Questions
Q: Can I work before receiving my work permit?
A: No. The visa grants entry and stay. Only the work permit authorizes employment. Working without a valid work permit is illegal.
Q: What if my company changes my role after I arrive?
A: Your work permit is tied to a specific position with a specific employer. Any significant change in role or salary may require a work permit amendment.
Q: What happens to my visa and work permit if I change jobs?
A: Both become invalid. You will need your new employer to initiate a new Non-B visa application and work permit.
Q: Can I renew my Non-B visa while in Thailand?
A: Yes. Non-B visas can be renewed within Thailand through the Thai Immigration Bureau. However, you typically need to leave Thailand and re-enter with a fresh visa, or apply for an extension at the local immigration office.
Key Takeaways
The Non-B visa gets you in the door. The work permit lets you work. Both are essential, and both require your employer to take the lead. Do not attempt to work on a Non-B visa alone. The cost is modest, the risk of penalties is severe, and the legal path is clear and straightforward.
Guru Tip
If you are considering a move to Chiang Mai for work, start conversations with your prospective employer early. Ask them directly whether they have experience hiring foreign staff and whether they understand the Non-B and work permit requirements. Companies that know the process move quickly. Companies that do not know the process will cause delays or, worse, hire you without proper authorization (putting you at legal risk). A simple email asking "Can you walk me through your process for sponsoring a foreign employee?" will reveal whether they are serious about compliance.
For more detailed information and to confirm current requirements, visit CMLocals: Thailand Business Visa Guide.
Ready to apply? Full step-by-step guide, document checklist, and current processing times at CMLocals: Business Visa Guide.
Guru Tip
The Non-B visa and work permit are two separate legal instruments and your employer is responsible for the work permit application, not you. Before accepting a job offer in Chiang Mai, confirm in writing that your employer has the registered capital and employee-to-permit ratio required to sponsor a work permit. Many small businesses want to hire foreign staff but do not have the legal structure to do so lawfully. This is worth checking before you commit to anything, not after you arrive.
What is the Non-B visa in Thailand?
The Non-Immigrant B visa is the entry permit for foreign nationals coming to Thailand to work or conduct business. It does not itself authorise employment. After entering on a Non-B, your employer must successfully apply for a work permit on your behalf before you can legally begin working.
Can I apply for a Non-B visa inside Thailand?
You must have the Non-B visa to enter Thailand for work purposes. Some extensions and conversions to longer-term Non-B status happen inside Thailand, but the initial visa must be obtained at a Thai consulate or embassy abroad before arrival. Your employer typically initiates the process with a letter of employment and company documents.
What documents does my employer need for a work permit?
The employer needs their company registration, a list of Thai employees (the minimum ratio is typically 4 Thai workers per 1 foreign permit), proof of registered capital, and tax compliance documents. You need your passport, photos, medical certificate, and degree or qualification documents depending on the role.
Can I work in Thailand without a work permit if I have a Non-B visa?
No. The Non-B visa allows entry but not employment. Working without a work permit is illegal regardless of visa type. Penalties include fines, deportation, and bans on re-entry. Enforcement in Chiang Mai has increased in recent years, particularly in industries with high foreign worker visibility.
Can I run my own business in Thailand on a Non-B visa?
Self-employment requires a more complex structure. You would need to establish a Thai company with the required registered capital and comply with the Foreign Business Act. Many foreigners operate through a Thai partner structure, but this carries legal risk if not properly documented. Legal advice specific to your business type is essential before proceeding.
