What Are the Requirements for Hiring Foreign Employees in Thailand?

In general, for each foreign employee a company hires, it is typically required to have:

• Approximately THB 2 million in registered capital
• A ratio of at least 4 Thai employees for every 1 foreign employee

These are the basic workforce requirements imposed by Thailand's labor authorities.

However, there is one important exception:

👉 If the company is BOI-promoted, these requirements may be relaxed.

This includes:

• No registered capital requirement
• No Thai employee ratio requirement
• Foreign employees may apply for visas and work permits through the BOI process

👉 In other words, the applicable requirements vary significantly depending on the company's legal structure and BOI status.

Foreign nationals who wish to work in Thailand generally need to obtain a Non-B (Business) Visa first. This is the first step toward legal employment.

Many people mistakenly believe:

👉 Having a visa means you are allowed to work.

However, in reality:

👉 A Non-B Visa simply allows you to enter Thailand for business or employment purposes—it does not by itself grant the legal right to work.

Important:

👉 A Non-B Visa ≠ the right to work

👉 Starting work without a Work Permit is still considered illegal employment.

The document that actually determines whether a foreigner can legally work in Thailand is:

👉 Non-B Visa + Work Permit

A Work Permit is the government's authorization allowing a foreign national to work for a specific employer in a specific position.

It clearly specifies:

• Company name
• Workplace
• Job position and duties

Please note:

If a foreign employee works outside the approved scope—for example, by changing employers or performing duties outside the authorized position—they may still be considered to be in violation of Thai labor regulations.

Summary