Working legally in Thailand as a foreigner involves more moving parts than most people expect, largely because it’s a two-step process split between two different government bodies. Understanding both halves before you start job hunting or accepting an offer will save you a lot of confusion.

The two-part system: visa and work permit

Thailand doesn’t have a single “work visa.” Instead, you need a Non-Immigrant B visa, which you obtain from a Thai embassy or consulate before entering the country, followed by a separate work permit, issued by the Ministry of Labour after you arrive. The visa gets you into Thailand for work-related purposes; the work permit is the document that actually authorises you to perform paid work. You need both, and neither substitutes for the other.

What your employer needs to sponsor you

Before a Thai company can sponsor a foreign employee, it has to meet its own requirements: generally at least 2 million THB in registered, fully paid-up capital per foreign worker (reduced to around 1 million THB if you’re married to a Thai national), and at least 4 Thai employees for every one foreign hire. Smaller businesses that can’t meet this ratio sometimes try to sidestep it by having foreign staff work on a tourist stamp, which is illegal and increasingly enforced. If a prospective employer suggests this, treat it as a serious red flag.

Restricted occupations

Thailand maintains a list of occupations legally reserved for Thai nationals, covering more than 30 categories, including certain accounting positions, specific legal roles, and various labour-intensive occupations. It’s worth confirming your specific role isn’t on this restricted list before getting too far into the process with an employer, since a mismatch here is grounds for outright refusal.

The application process, step by step

In practice, the process generally runs: your employer prepares its own documentation (company affidavit, VAT registration, Thai staff registered with Social Security); you gather personal documents (passport, photos, medical certificate from a government hospital or licensed clinic, educational qualifications); you apply for the Non-B visa from outside Thailand; once approved and in Thailand, your employer submits the work permit application to the Ministry of Labour, typically issued within 7 to 14 business days. The initial Non-B visa allows a 90-day stay, which is then extended to a full year once your work permit is in place.

Common reasons applications get delayed or refused

The most frequent issues are a mismatch between your role and the company’s registered business scope (a tech company can’t sponsor a “marketing manager” if marketing isn’t part of its registered activities), incomplete Thai staff Social Security registrations at the time of application, and medical certificates from unrecognised clinics. Getting your employer’s documentation fully in order before you apply avoids most of these delays.

Ongoing obligations once you’re working

Holding a work permit isn’t a one-time achievement. You’ll need to complete 90-day address reporting like other long-term visa holders, arrange a re-entry permit before any international travel to avoid cancelling your visa, and renew both your Non-B visa and work permit annually alongside your employer’s updated documentation. Changing employer or role generally requires a new work permit application, not a simple update.

Tax on your Thai income

Income earned through Thai employment is subject to Thai personal income tax on a progressive scale, calculated separately from any obligations you retain in your home country. Depending on your nationality and circumstances, double taxation treaties may reduce what you owe overall, but this is genuinely worth planning for with a professional rather than assuming it sorts itself out at year end.

What happens if you work without a permit

Working in Thailand without a valid permit is not a grey area. Penalties can include substantial fines, deportation, and bans on re-entering the country, and employers face their own daily fines for each worker found in violation. This applies to short-term and freelance work as much as full-time employment.

Final thoughts

Working legally in Thailand is entirely achievable, but it depends heavily on your employer having its own documentation and structure in order, not just on your personal paperwork. Confirming your prospective employer can genuinely sponsor a foreign worker, before you get emotionally invested in an offer, is time well spent.

Explore current opportunities through JLIT’s job board, or get in touch for guidance on your specific visa and tax situation.