How to Get a Thailand Work Permit for Foreign Companies

Thailand has positioned itself as a leading investment and employment destination in Southeast Asia, offering strategic access to regional markets, a skilled workforce, and strong government incentives. Data from the Thailand Board of Investment shows that investment promotion applications in 2023 totalled THB 848 billion (approximately USD 24 billion), reflecting sustained investor confidence and expansion across the manufacturing, digital, and logistics sectors.

For foreign companies hiring or relocating international employees, understanding how to obtain a Thailand work permit is fundamental to operating legally. Thailand’s Alien Employment Act B.E. 2551 strictly prohibits employment without a valid permit, with employer penalties reaching THB 100,000 per violation. Both the employer and the employee must comply with documentation, capital, and reporting standards before any work may begin.

This guide outlines the complete process, from eligibility and document preparation to processing timelines, costs, and renewals, based entirely on verified information from the Ministry of Labour, Department of Employment, Immigration Bureau, and BOI. It provides international employers with clear, actionable insight into maintaining compliance while expanding their workforce in Thailand.

Why Foreign Companies Must Understand Thailand Work Permits

Thailand remains one of Asia’s most dynamic economies, attracting foreign investors in manufacturing, digital technology, tourism, and services. In 2023, the country recorded USD 28.3 billion in foreign direct investment, according to the Bank of Thailand. Global firms expanding operations here often rely on international experts, executives, or engineers, making compliance with Thailand’s work permit regulations critical.

Understanding how to get a Thailand work permit is essential because both the employer and employee bear strict legal responsibilities. Working without a valid permit is prohibited under the Alien Employment Act (B.E. 2551, 2008) and may lead to fines up to 100,000 THB or imprisonment. Employers who hire foreign nationals without authorisation can also face penalties or suspension of their business license.

For international companies or startups expanding into Thailand, mastering the work-permit process ensures lawful hiring, protects corporate reputation, and helps maintain smooth immigration operations.

Understanding Key Terms: Work Permit vs. Work Visa in Thailand

Before any employment can begin, a foreign professional must obtain two related authorisations: a Non-Immigrant B Visa and a Work Permit. These two documents serve distinct but complementary purposes.

The Non-Immigrant B Visa (Business Visa) is issued by a Royal Thai Embassy or Consulate abroad. It allows entry into Thailand for employment or business and is typically valid for 90 days. Once the employee enters Thailand, the company must apply for the Work Permit from the Department of Employment (DOE) under the Ministry of Labour.

A work visa grants entry; a work permit grants the right to perform work. The permit specifies the employer, job title, and work location. Any deviation, such as switching employers or working in a different location, requires a new permit or official amendment.

Eligibility Criteria for Foreign Employers Sponsoring Work Permits

To sponsor a foreign employee, the employer must meet Thailand’s local entity, capital, and staffing requirements.

Legal Entity and Capital

• The company must be registered in Thailand with a valid Tax ID number and listed in the Department of Business Development (DBD).
• Non-BOI-promoted entities must typically maintain at least 2 million THB of paid-up capital per foreign employee.
• For companies promoted by the Board of Investment (BOI), this capital requirement may be waived or adjusted under BOI-specific criteria.

Thai-to-Foreign Employee Ratio

In general, employers must employ at least four Thai employees for every one foreign worker. This ratio can vary for BOI-approved businesses, regional headquarters, or startups in targeted industries.

Documentation and Compliance

Employers must submit:

• Company registration certificate (DBD Form 3)
• Latest VAT filing (Por Por 30)
• Social Security Fund contribution receipts
• A written employment contract and job description for the foreign employee

These prerequisites confirm that the company has a legitimate presence and ongoing business activity in Thailand.

Types of Work Permits in Thailand

The types of work permits in Thailand vary according to the employee’s role, employer type, and project duration. Each has different validity and renewal conditions.

1. Standard Work Permit (Non-BOI Company)

Issued for employees of Thai-registered businesses not under BOI promotion. Valid for up to one year, renewable annually if employment continues.

2. BOI-Promoted Work Permit

Granted to employees of companies receiving BOI investment privileges. Processed via the BOI One Stop Service Centre, with expedited turnaround and reduced capital or ratio requirements.

3. SMART Visa Program

For experts, executives, investors, and startup founders in target industries such as biotechnology, automation, and renewable energy. Holders are exempt from obtaining a separate work permit and can stay for up to four years.

4. Short-Term or Technical Work Permit

Available for specialists entering Thailand for brief assignments (training, installation, inspection). Valid up to 90 days in any 12 months.

5. Intra-Company Transfer (ICT) Work Permit

Designed for executives or specialists transferred from a foreign headquarters to a Thai subsidiary. Valid for the duration of the assignment, generally up to two years.

Step-by-Step: How to Get a Work Permit in Thailand

The process of how to apply for a work permit in Thailand involves several coordinated steps between the employer and employee.

Step 1 – Secure the Non-Immigrant B Visa

Before travelling, the employee must obtain a Non-Immigrant B Visa at a Thai consulate abroad. The employer provides:

• Invitation letter and employment offer
• Company registration documents
• Business license and tax filings

Step 2 – Enter Thailand and Prepare Documents

Upon entry, the employee must have at least 21 days of visa validity remaining. The employer compiles and signs all corporate documents and employment forms.

Step 3 – File Work Permit Application

Applications are submitted to the Department of Employment (Bangkok) or the local Provincial Employment Office. According to official timelines, processing typically takes 7–10 business days if documents are complete.

Step 4 – Obtain and Sign the Work Permit

Once approved, the employee signs the official blue-book work permit. This document lists the authorised position, workplace, and employer.

Step 5 – Visa Extension and Re-Entry Permit

To continue working beyond the initial visa period, the employee must extend the Non-Immigrant B Visa through the Immigration Bureau and secure a re-entry permit for international travel.

Required Documents & Compliance Checklist

Submitting the correct documentation is one of the most critical parts of obtaining a Thailand work permit. Both the employer and the foreign employee must provide a full, verifiable set of documents to the Department of Employment (DOE) under the Ministry of Labour. Missing or untranslated paperwork is a leading cause of application delays, so accuracy and consistency are essential.

Employer Documents

Employers sponsoring a foreign worker must present:

• Company Registration Certificate issued by the Department of Business Development (DBD)
• List of Shareholders (Bor Or Jor 5)
• VAT Registration Certificate (Por Por 20)
• Social Security registration confirmation and latest contribution receipts
• Corporate tax returns (Por Ngor Dor 50 or 51)
• A signed employment contract and detailed job description matching the proposed role

Employee Documents

The employee must supply:

• A valid passport (minimum six months remaining)
• A Non-Immigrant B Visa
• Verified educational certificates and relevant qualifications
• A medical certificate issued within the last 30 days
• Three passport-sized photos (3×4 cm)
• A current résumé or employment record

All foreign-language documents must be translated into Thai, notarised, and authenticated by either the Ministry of Foreign Affairs or a Royal Thai Embassy abroad before submission.

Cost, Processing Time & Validity

Understanding the financial and timing aspects of a work permit in Thailand helps employers plan for smoother onboarding and avoid overstays. All fees and validity periods are determined by the Department of Employment and the Immigration Bureau, and vary slightly by province and nationality.

Government Fees

Official work permit fees are standardised nationwide:

Visa issuance fees for the Non-Immigrant B Visa depend on nationality and embassy policy, typically ranging between USD 80–100.

Processing Time

• Work Permit Approval: Around 7–10 business days in Bangkok, per DOE guidance.
• Provincial Offices: Up to 2–3 weeks, depending on document review volume.
• Visa Extension: Managed by the Immigration Bureau, generally within 1–2 weeks.

Validity

• Standard work permit: Up to 1 year, renewable upon continued employment.
• BOI-promoted permits: Validity tied to project duration and BOI approval.
• SMART Visa: Up to 4 years, no separate permit required.
• Short-term technical permits: Maximum 90 days per assignment.

Employer Responsibilities & Post-Approval Compliance

Securing the work permit is only the beginning. Thai authorities expect employers to actively maintain the employee’s lawful status, keep records audit-ready, and report changes promptly. A tight internal playbook, covering notifications, payroll/tax, renewals, and document hygiene, prevents avoidable fines and protects your ability to sponsor future foreign hires.

• Reporting & Monitoring: Employers must report any change in job title, work location, or employment status (transfer/termination) to the Department of Employment within 15 days. BOI’s official guidance repeats this rule and clarifies that employers must also report terminations within the same window. Keep a complete file (contract, permit booklet, passport/visa, SSF enrolment, tax records) available for inspection. 
• Permit scope & Cancellations: Work performed must match the employer, role, and location printed in the permit. If the relationship ends, the employer should return/cancel the permit promptly to avoid exposure on future audits; BOI notes that letting a foreigner work without a valid permit (or outside scope) exposes employers to fines of ฿10,000–฿100,000 per worker. Repeat offences can escalate penalties. 
• Payroll & Tax compliance: Register foreign staff in the Social Security Fund and withhold Personal Income Tax monthly using P.N.D.1; the Revenue Department publishes the withholding return and English guidance. Maintain proof of remittances and annual summaries. 
• Visa Maintenance & Travel: If the employee travels, ensure a re-entry permit is issued before departure; otherwise, the visa (and the basis for the work permit) lapses. 
• Penalties: MOL reiterates that hiring foreigners without a valid permit, or allowing work outside the authorised scope, triggers the ฿10,000–฿100,000 per worker fine range, with tougher sanctions for repeat violations.

How Commenda Simplifies Global Work Permit and Compliance Management

Successful expansion into markets like Thailand begins with establishing the right legal entity and maintaining ongoing corporate compliance, not navigating these processes through scattered advisors. Commenda’s global business console gives companies a single, reliable system to form, manage, and oversee foreign entities with clarity and control.

Commenda helps international teams by providing:

• End-to-end entity incorporation: Set up and register your Thailand entity, and entities in 30+ jurisdictions, through one streamlined platform that organizes documents, filings, and regulatory steps from start to finish.
• Centralized entity management: Maintain an up-to-date, audit-ready record of directors, shareholders, resolutions, and corporate documents across all your global entities in a single, secure dashboard.
• Coordinated banking and operational setup: Prepare and manage the documentation required for local bank account opening and operational registrations, ensuring your entity is fully equipped to begin business activities.

While immigration support can be added through specialized partners, Commenda ensures your legal entity and corporate structure are established and maintained accurately, creating a strong foundation for compliant hiring and long-term growth.

Book a free demo today to see how Commenda can support your global hiring and entity compliance in Thailand and beyond.

FAQs

1. What is the cost of a work permit in Thailand for foreign employees?

Work permit fees range from 750 THB (≈ USD 20) for three months to 3,000 THB (≈ USD 86) for one year, plus applicable visa fees.

2. How long does it take to apply for a work permit in Thailand?

Usually 7–10 business days in Bangkok; up to 2–3 weeks in other provinces.

3. What types of work permits in Thailand are available?

Standard, BOI-promoted, SMART Visa, and short-term project permits.

4. Can a foreign company apply for a work permit in Thailand without a local office?

No, a Thai-registered entity is required unless approved under the BOI scheme.

5. What risks exist if a company fails to comply after getting a work permit?

Penalties include fines up to 100,000 THB, revocation of permits, and possible legal action.

6. Can the employee change jobs or employers under the same permit?

No, each work permit is specific to the employer and position.

7. How to renew or extend a work permit in Thailand?

Apply at least 30 days before expiry with updated tax and social-security documentation.

8. Is a work permit sufficient for visa entry, or is a separate visa needed?

A separate Non-Immigrant B visa or SMART Visa is required for lawful entry and stay in Thailand.