Thailand Work Permit and Foreign Business Licence — Full Guide
A Thai work permit (Tor Tor 3) is a statutory prerequisite for any foreign national engaging in remunerated activity inside Thailand, whether as an employee, executive, consultant, or shareholder-director. Beyond the standard Ministry of Labor route, ILC supports the specialised regimes that dominate modern practice: Board of Investment (BOI) fast-track single-window approvals at the OSOS building, IEAT permits inside industrial estates, Smart Visa for executives, technology experts and startups, Long-Term Resident (LTR) visa, DTV Destination-Thailand digital-nomad visa, and Foreign Business Licence (FBL) or Foreign Business Certificate (FBC) filings under the Foreign Business Act B.E. 2542. Each path has distinct minimum-capital rules (2M/3M/5M THB), Thai-to-foreign employee ratios (4:1 general, waived for BOI and Smart Visa), work-scope definitions, and renewal windows. Missing a single detail — for example a job description that overlaps with a Restricted Occupation List item — is grounds for rejection or a THB 100,000 fine.
End-to-End Process — work permit thailand
Check the current instructions of the relevant authority and the receiving organisation before following these steps; requirements can differ by case.
1) Route selection
We map the applicant's role, salary and shareholding to the most efficient route (Ministry of Labor, BOI, Smart Visa, LTR, DTV).
2) Corporate and financial preparation
Company registration, capital paid-up evidence, tax filings and social security registration are readied to meet the underlying test.
3) Visa alignment
Non-B, LTR, or Smart-Visa entry is coordinated with immigration so work-permit filing occurs within statutory windows.
4) Ministry filing
Application, contract, and supporting documents are lodged at the appropriate desk (One Stop, OSOS, or DoE).
5) Approval and card issuance
Blue book (traditional) or digital work permit card is issued, timing depends on the authority and the case; no fixed timeline is promised.
6) Annual renewals and reporting
90-day reports, tax filings, and annual permit renewal are handled proactively to avoid overstay or lapse penalties.
Documents and Preconditions
This is a starting checklist, not a universal requirement. Confirm the current documents with the relevant authority for your case.
Who Uses This Service
These are possible situations, not records of completed client work or promises of an outcome.
BOI-promoted tech firm
5-day approval of executive and expert permits inside the OSOS window.
Startup founder on Smart Visa
May be considered if BOI eligibility criteria are met; work conditions differ from the standard route.
FBL for foreign consultancy
Licence to conduct restricted List-3 services with cabinet approval.
DTV remote-worker
Work-authorised entry for digital professionals employed by offshore companies.
Options and Trade-offs
Availability, timing and acceptable documents depend on the authority and the specific application.
