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SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
SUWANVARA LAWFIRM
SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
Labor Law

Work Regulations: Which Companies Must Have Them, and What Comes Next?

When the number of employees reaches the statutory threshold, employers must prepare work regulations in Thai. It is not just about keeping a file; the regulations must be announced to employees and actually enforceable when disputes arise.

by Legal Advisory TeamAugust 22, 20263 min read
Work Regulations: Which Companies Must Have Them, and What Comes Next?

Many business operators know they must have "work regulations," but they treat them as documents to be prepared just to check the compliance box—downloading a sample, changing the company name, and filing it away.

The reality is that this document is the rulebook that is picked up and read first when a dispute arises, both by labor inspectors and at the Labor Court. An employer whose regulations are written to match how work is actually done has an entirely different standing from an employer holding a ready-made document that was never used.

When is it required?

The law requires employers who have employees at or above the number specified by law to prepare work regulations in Thai, within the time period counted from the date on which the number of employees reaches that threshold.

Fast-growing businesses often miss this point, because the number of employees crosses the line from the month they bring in a large batch of staff, but no one notices. You should check the number currently specified by law, because the details can be updated.

Topics That Must Be Included at Minimum

Generally, the regulations must cover at least the following:

  • Working days, normal working hours, and rest periods
  • Holidays and rules for taking holidays
  • Rules for overtime work and work on holidays
  • Days and places for payment of wages, overtime pay, and holiday work pay
  • Leave days and rules for taking leave
  • Discipline and disciplinary penalties
  • Grievances
  • Termination, severance pay, and special severance pay

The topics that are most often written loosely are discipline and disciplinary penalties and grievances, even though these two topics are the ones actually used when an issue arises.

If You Already Have One, What to Do Next

  • Issue it within the prescribed deadline from the date the number of employees reaches the threshold required by law.
  • Publish and post it openly in the workplace — do not keep it only with the HR department.
  • Keep it at the place of business so that labor inspectors can inspect it.
  • Notify employees of it and keep evidence that they were notified, such as document receipt signatures or an internal system that records acknowledgment.

The point most often lost in practice is: the employer does have work rules, but cannot prove that the particular employee was ever notified of them.

Common Mistakes

Copying a ready-made template in its entirety and having text that does not match your own business, such as referring to work shifts that do not exist or benefits that were never provided, which becomes a promise that employees can invoke.

Setting punishment at only one level leaving no intermediate step between a warning and dismissal. When the time actually comes, you jump straight to dismissal without a history of warnings to support it.

Unilaterally amending the document to reduce previously granted rights without considering whether it affects the original employment conditions.

Making the English version the primary one and translating it into Thai later without checking that both versions match.

Not reviewing the document for many years even though the organizational structure, working hours, and benefits have all completely changed.

If you are going to review what you already have, where should you start?

  1. Compare the regulations against current actual work practices, item by item.
  2. Check which provisions grant more rights than intended and which fall below the law — the parts that fall below the law are unenforceable anyway.
  3. Check whether the discipline, penalty, and grievance sections are actually workable if an issue arises tomorrow.
  4. Check the acknowledgment evidence of every employee currently working.
  5. Set a review cycle, such as once a year together with the review of employment contracts.

Read more

📌 See more: Labour Cases · Business Law

If you would like your existing regulations reviewed to see whether they are sufficiently watertight, consult a lawyer free of charge — call 092-254-2045


This article provides general information, not legal advice for any specific case. Employee headcounts and statutory deadlines may have been updated; please check the version currently in force.

Frequently asked questions

Do small companies need to have work regulations?+

The law requires employers with a number of employees at or above the statutory threshold to prepare work regulations in Thai. Businesses with fewer employees are not required to do so, but that does not mean they should not have them, because when a dispute arises over discipline or dismissal, what is used as a reference is the rules announced in advance. If there is nothing at all, the employer will be in a much more difficult position to explain.

Do we need to submit the regulations to the authorities for review before use?+

Currently, there is no need to submit them to the Director-General or a designated person for review as was required in the past. The remaining duties are to announce them within the period prescribed from when the number of employees reaches the statutory threshold, to publicize and post them openly so employees are informed, and to keep them at the workplace for labor inspectors to inspect.

Can we later amend the regulations to make them stricter?+

They can be amended, but changes that are not favorable to employees are limited, because the existing employment conditions are not something the employer can unilaterally reduce at will. A safe amendment therefore requires looking at whether it affects existing rights. If it does affect them, consent and the procedures under the labor relations law must also be considered.

If an employee does wrong, but the regulations do not cover that matter, can we punish the employee?+

This is the point where employers most often lose. Disciplinary punishment should be based on rules announced in advance. If the matter is not covered at all and it is not an obviously serious offense under the law, heavy punishment or dismissal without any payment can easily be challenged. The best approach is to review the regulations so they cover what actually happens in your own business, rather than using a ready-made template.

We already have regulations in English. Is that enough?+

The law requires them to be prepared in Thai. Companies with foreign executives often make an English version for internal use first and then translate it into Thai later, which carries the risk that the two language versions differ in details. When a dispute arises, it becomes a matter of arguing over which version applies. You should clearly specify that the Thai version is the controlling version and ensure the two versions' contents truly match.

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