About this series Doing business in Thailand means occasionally encountering situations that would simply never happen in Japan. This series looks at common legal trouble patterns for Japanese SMEs — written as a readable column, not a legal textbook. (Final installment)
The Thai immigration officer looked at the passport, then at the work permit. Then back at the passport. “These don’t match,” he said quietly. — If that moment happened to one of your employees on assignment in Thailand, what would your company do?
What It Takes to Work Legally in Thailand
For a foreign national to work legally in Thailand, two things generally need to be in place simultaneously:
- The right type of visa (Non-Immigrant B visa, etc.)
- A Work Permit
Only when both are properly aligned is the work legally authorized. The problem is that this alignment is easier to lose than most companies expect.
Common Pitfalls
① Working on a tourist visa or visa exemption
Entering for a “short business trip” or “site visit” — and then conducting meetings, giving instructions to local staff, or negotiating with clients. Thailand’s definition of “work” is broad enough that giving operational instructions to local staff or holding business negotiations may qualify. Tourist visas and visa-exempt entry do not permit work activities.
② Mismatch between visa category and work permit content
Holding a Non-Immigrant B visa, but with a work permit specifying a different employer entity or different job description from the actual work being performed. For example, the work permit is issued under Group Company A, but the actual reporting line, salary payment, and operational instructions come from Group Company B — a technical violation.
③ Expiry through oversight
Both visas and work permits have expiration dates and must be renewed in coordination. Staff turnover, inadequate handover, or missing reminders can result in a lapse that nobody notices until it becomes a problem.
④ Transfers and secondments without updating documents
When a Japanese secondee moves between group companies, the work permit and sometimes the visa need to be reissued or transferred. “It’s the same person in the same office” does not automatically satisfy the legal requirements.
What’s at Stake If a Violation Is Found
Violations of Thailand’s Immigration Act and Alien Working Act can result in:
- Consequences for the individual: fines, forced departure (deportation)
- Consequences for the company: work permit revocation, difficulty obtaining future permits, fines
- Operational risk: a key person suddenly unable to work legally
For a small operation — where the country manager or plant director is that key person — suddenly losing their ability to work legally can have an immediate impact on business continuity.
A Checklist to Review Now
- Confirm the visa type and expiration date for every Japanese employee and officer in Thailand
- Verify that the employer entity and job description on each work permit match the actual situation
- Review whether business visitors are engaging in activities that may constitute “work”
- Set calendar reminders for renewal — start the process at least three months before expiration
- Confirm the procedure when intra-group transfers or secondments occur
Closing Thoughts on This Series
Across five installments, we’ve covered severance pay disputes, joint venture breakdown, unpaid receivables, internal fraud, and work authorization — five different scenarios with one thing in common: advance knowledge would have prevented most of them.
Law protects those who know it. Thailand’s legal environment differs from Japan in ways that matter, and Japanese business intuitions don’t always translate. Consulting a specialist before something goes wrong — rather than after — is what makes the difference for long-term stability in Thailand.
For questions about visa and work permit status, compliance reviews, or any of the topics covered in this series, please feel free to contact us.
This article is for general informational purposes about Thailand’s legal system and does not constitute legal advice under Thai law. For specific matters, please consult a Thai-qualified legal professional. Our firm works in collaboration with JTJB International Lawyers’ Thai-qualified attorneys.