Immigration Act B.E. 2522 (1979), as amended
Governs visa categories, extensions of stay, residence notification and grounds of inadmissibility.
Eastern Thailand — Rayong
Visas, work permits, residency and lawful status

Rayong hosts one of Thailand’s largest petrochemical and manufacturing bases and sits within the Eastern Economic Corridor. Legal work centres on contracts between manufacturers and contractors, employment of both permanent staff and subcontracted labour, promoted-investment conditions, permitting and administrative challenges, and documentation for foreign executives posted locally.
Legal advice and filings on the status of foreign nationals in Thailand — visa categories, extensions, work permits, 90-day reporting, and difficult cases such as overstay, refusal and appeals.
Jurisdiction and filing requirements should be confirmed for each matter, because practice and required attachments differ between offices.
| Court / authority | What it handles |
|---|---|
| Rayong Provincial Court and Rayong Municipal Court | Civil and criminal cases within the province |
| Rayong Juvenile and Family Court | Family and juvenile matters |
| Labour Court Region 2 | Labour cases across the eastern region |
| Rayong Labour Protection and Welfare Office | Labour complaints and workplace safety matters |
| Rayong Provincial Land Office and branch offices | Land, condominium and lease registration |
| Rayong Immigration Office | Extensions of stay and foreign-national matters for industrial personnel |
| Rayong Legal Execution Office | Enforcement of judgments in the province |
| Rayong Provincial Commercial Office | Local company registration services |
Extensions are usually decided within weeks; permanent residence and naturalisation take years.
Timeframes are indicative and depend on the court calendar and the authority handling the matter in Rayong.
Summarised for general understanding only. The application of each provision depends on the facts of your case.
Governs visa categories, extensions of stay, residence notification and grounds of inadmissibility.
Governs work permits and permissible occupations for foreigners.
Sets the criteria for Thai nationality and related permanent-residence considerations.
These are constructed examples used to explain procedure. They are not client matters, and no outcome is implied or guaranteed.
Situation: The applicant meets the amount but not the required seasoning period.
Usual approach: Verify seasoning rules and evidence format before the filing date and allow time for bank letters; document practice varies between immigration offices. (Hypothetical.)

Labour protection law can make the principal jointly liable with a subcontractor for wages and statutory payments in certain cases. The practical safeguard is a contractual requirement to show proof of wage payment before each instalment is released, with records of those checks kept every period.
First check whether the order states its reasons and appeal rights, since administrative procedure law requires reasons. Then note the internal appeal deadline and the deadline for filing in the Administrative Court — missing them forfeits the right even where the substance is arguable.
Three elements must align: work authorisation under foreign-worker law, the extension of stay under immigration law, and the employment terms in the contract and any investment-promotion conditions. All three must state the same position and workplace, or renewal filings will be sent back for correction.
No. Working in Thailand requires a valid work permit, which is separate from the visa.
They generally need authentication in the issuing country, translation into Thai or English, and legalisation of the translation at the Department of Consular Affairs.
Thailand acceded to the Apostille Convention on 30 June 2026, entering into force on 28 February 2027. Until then, consular and embassy legalisation remains the route.
Tell us the facts and we will explain which authority applies, what documents are needed and the realistic timeframe.