Thailand Work Permit Guide 2025: How to Get One, Keep It, and Change Jobs

THE VISA COMES FIRST You cannot get a Thai work permit without first holding a Non-Immigrant Visa Category B (Non-B). A work permit cannot be issued to someone on a tourist visa, a visa exemption stamp, or a Non-OA retirement visa. If you are changing jobs or entering Thailand to take up employment, you must have a Non-B before the work permit application begins. The Non-B is typically applied for at a Thai consulate in your home country or a country where you are legally resident. Your Thai employer will usually provide a letter of employment offer and their company registration documents to support the Non-B application. THE WORK PERMIT APPLICATION — YOUR EMPLOYER LEADS The work permit application is submitted to the Department of Employment (doe.go.th), not to Immigration. Your employer (the Thai company or entity hiring you) is the applicant — not you personally. Your role is to provide the supporting documents your employer requests. Typical documents required from you: • Valid Non-B visa and entry stamp (in-country) • Passport (original + copies of all pages with stamps) • Recent passport-size photographs • Completed personal information form • Educational qualifications relevant to the role (degree certificates, professional certifications — translated if not in Thai or English) • Medical certificate from a Thai hospital or clinic (valid 30 days) • Criminal background check from your home country (some positions; validity varies) Typical documents required from your employer: • Company registration certificate • Shareholder list and memorandum of association • Balance sheets and financial statements • Evidence that the company meets the Thai employee-to-foreign-employee ratio requirements (typically 4 Thai employees per 1 foreign work permit holder, though BOI-promoted companies may be exempt) • The specific job description and justification for why a foreign national is needed PROCESSING TIME AND APPROVAL Standard processing at the Bangkok Department of Employment: 5–7 business days for non-BOI companies. BOI-promoted companies may use BOI's one-stop service, which can be faster (same day or 1–3 days). Provincial Department of Employment offices vary. The work permit is issued as a physical document (a small book) listing your employer, job title, and permitted work location. You must carry it whenever working or potentially attending business meetings on behalf of your employer. SCOPE OF THE WORK PERMIT A Thai work permit is specific to: the employer listed, the job title listed, and the location(s) listed. You cannot legally use one employer's work permit while performing work for a different company, even as a short-term arrangement. Significant changes to your role or location should be reflected by amending the permit. CHANGING JOBS If you change employers in Thailand, your existing work permit is cancelled when you resign or are terminated. Your new employer must apply for a new work permit from scratch. In the interim, you cannot legally work. Plan the timing carefully — there is no grace period for working between permits. If your Non-B visa was tied to your previous employer (which it usually is), changing jobs may also require changing your visa. Some workers exit Thailand and re-enter on a new Non-B issued for the new employer; others manage the transition in-country. The correct approach depends on the timing and your specific visa situation. THE BOI FAST TRACK Companies with Board of Investment (BOI) promotion certificates can apply for work permits and Non-B visas through BOI's One Stop Service Centre in Bangkok. Benefits: significantly faster processing, less documentation, and combined visa + work permit service. BOI companies can also sponsor certain expat employees for 1-year (or multi-year) work permits rather than the standard 1-year tied to the business cycle. PENALTIES FOR WORKING WITHOUT A PERMIT Working in Thailand without a valid work permit is a criminal offence under the Alien Working Act B.E. 2551 (2008). Penalties for the foreign national: fines up to 100,000 THB and/or imprisonment up to 5 years. Deportation and a re-entry ban are possible outcomes. Penalties for the employer who allows unpermitted work: fines up to 800,000 THB. Common misunderstandings: attending a conference or meeting in Thailand is generally not considered "work" for work permit purposes. Signing contracts on behalf of your company in Thailand may be. The line is not always clear — seek qualified legal advice if you are uncertain about specific activities. REMOTE WORKERS AND DTV HOLDERS The DTV visa (Destination Thailand Visa) for remote workers does not require a work permit for overseas-sourced income. If your income comes entirely from outside Thailand and you have no Thai employer, no work permit is needed. If any part of your income involves a Thai employer or Thai client, a work permit may be required. General guidance — seek qualified advice for your specific situation. Visa Centre assists with work permit applications and employer-employee document coordination. All information reflects publicly available requirements as of June 2025 (Sources: Thai Department of Employment doe.go.th, Thai Immigration Bureau immigration.go.th). Requirements change without notice. Not legal advice. No outcome guaranteed.