Thailand Employment Law for Employers: A Complete Legal Guide (2026)

Last updated on กรกฎาคม 3, 2026

ประเด็นสำคัญ: Thai employment law sets firm minimum standards for every employer operating in Thailand. The Labour Protection Act (LPA), its December 2025 amendments, and the Civil and Commercial Code together govern contracts, leave, termination, and severance. Non-compliance exposes employers to fines of up to THB 200,000, imprisonment, and Labour Court orders for back-pay or reinstatement. Understanding Thailand Employment Law for Employers is essential for success.

Hiring staff in Thailand looks straightforward on paper. In practice, the Labour Protection Act carries obligations that catch many employers off guard — especially around severance pay, termination grounds, and the new leave entitlements that took effect in December 2025. This guide covers the essential rules every employer needs to follow, regardless of business size or industry, under Thailand Employment Law for Employers.

The Legal Framework Governing Thai Employment

Three primary sources of law shape the employer-employee relationship in Thailand.

เดอะ พระราชบัญญัติคุ้มครองแรงงาน พ.ศ. 2541 (พ.ศ. 2541) and its subsequent amendments — most recently the Labour Protection Act (No. 9) B.E. 2568 (2025), effective 7 December 2025 — set the floor for working conditions, leave entitlements, severance, and termination rights. The LPA applies to every private-sector employer in Thailand. Any employment contract clause that provides less than what the LPA mandates is void; the LPA provision replaces it automatically.

เดอะ Civil and Commercial Code (CCC), Sections 575–586 govern the general law of hire of services. Section 575 defines the hire of services contract. Section 583 gives an employer the right to terminate immediately — without notice — for wilful wrongdoing by the employee. Section 585 allows either party to end an indefinite contract by giving advance notice in accordance with the agreed payment cycle. These CCC provisions sit beneath the LPA; where the LPA imposes higher standards, the LPA controls.

เดอะ Labour Relations Act B.E. 2518 (1975) governs collective bargaining and trade unions. Employers with 20 or more employees must be aware of unionisation rights and the mandatory procedures for handling labour disputes before they escalate to the Labour Court.

Employment Contracts: What Must Be in Writing

For a deeper understanding of your responsibilities, refer to the detailed guidelines regarding Thailand Employment Law for Employers.

Thai law does not require all employment contracts to be in writing. Section 578 of the Civil and Commercial Code allows an oral hire of services. In practice, however, an employer who cannot produce a written contract risks losing every disputed point in a labour court proceeding, because Thai courts resolve ambiguity in the employee’s favour.

Fixed-term contracts must always be in writing. The agreed end date — and the legitimate reason for the fixed term, such as a specific project or seasonal work — must be clearly stated. Fixed-term contracts cannot exceed two years and cannot be used simply to avoid severance obligations.

A well-drafted Thai employment contract should address the following:

• Full legal names, identification numbers, and addresses of employer and employee
• Job title, duties, reporting line, and place of work
• Base salary, payment currency, payment schedule, and any allowances or bonuses
• Normal working hours and days per week
• Probationary period (if any — typically up to 119 days to avoid triggering severance entitlement on early termination)
• Leave entitlements — at minimum matching LPA requirements
• Notice period for termination by either party
• Confidentiality and intellectual property clauses (if applicable)
• Non-competition clause (permissible only if narrowly drawn in scope, geography, and duration — Thai courts strike down unreasonable restraints)

Practice note: Contracts used before December 2025 must now be reviewed against the new LPA amendments. Any clause covering maternity leave, paternity leave, or telework arrangements that does not meet the new minimum standards is automatically void.

Work Rules: Mandatory for Employers with 10 or More Staff

Any employer with 10 or more employees must prepare written work rules in Thai. The rules must cover working days, hours and holidays, wage payment dates, overtime and holiday pay rates, leave entitlements, disciplinary rules, and the procedure for making employee complaints. The employer must post the work rules conspicuously in the workplace and submit a copy to the Department of Labour Protection and Welfare within 15 days of the rules coming into force.

Under the 2025 LPA amendments, employers with 10 or more employees must also file an Employment Terms and Working Conditions Disclosure Form with the Director-General of the Department of Labour Protection and Welfare annually, no later than January each year. Employers who have not yet done this for 2026 should act immediately.

Without compliant work rules, an employer cannot lawfully dismiss an employee for a disciplinary violation. Thai courts have consistently held that dismissal for breach of a rule that was never properly adopted and posted is an unfair termination.

Working Hours, Overtime, and Public Holidays

Normal working hours are capped at 8 hours per day and 48 hours per week for most jobs. Hazardous work is capped at 7 hours per day and 42 hours per week. Employees must receive at least one rest day per week of not less than one consecutive day.

Overtime requires the employee’s consent each time it is worked, unless the employment contract or work rules specify otherwise for certain job types. Overtime pay rates under the LPA are as follows:

Work Type	Minimum Pay Rate
Overtime on a normal workday	1.5× the normal hourly rate
Work on a weekly rest day (8 hours or less)	1× the normal hourly rate
Overtime on a weekly rest day or public holiday	3× the normal hourly rate
Work on a public holiday (8 hours or less)	2× the normal hourly rate (or one day’s wage in addition to normal wages)

Thailand observes a minimum of 13 public holidays per year. Employers must pay full daily wages for all statutory public holidays, whether or not the employee works. Adding extra public holidays beyond the statutory minimum is at the employer’s discretion.

Leave Entitlements Under the 2025 Amendments

The December 2025 amendments to the LPA expanded several leave categories. Employers must comply with the new minimums from 7 December 2025 onwards.

Leave Type	Entitlement	Pay
Annual leave	Minimum 6 days per year after 1 year of service	Full wages
Sick leave	Up to 30 days per year (employer can require a medical certificate for 3+ consecutive days)	Full wages for up to 30 days
Personal business leave	Minimum 3 days per year	Full wages
Maternity leave	Up to 120 days per pregnancy (new — previously 98 days)	Employer pays full wages for up to 60 days; Social Security Fund covers up to 90 days
Paternity / spousal leave	15 days per birth event (new — previously no statutory minimum)	Full wages
Infant-care leave	15 days in specific medical cases (new)	50% wages
Military conscription leave	Duration of military service	Full wages for up to 60 days
Sterilisation leave	As certified by a physician	Full wages

Action item for employers: Any employment contract, work rules, or employee handbook drafted before December 2025 must be updated to reflect the new maternity, paternity, and infant-care leave entitlements. Policies that still reference 98 days of maternity leave or provide no paternity leave are now non-compliant.

Telework Provisions (New in 2025)

Section 23/1 of the LPA now formally recognises teleworking. An employer and employee may agree in writing — or by electronic document — to a remote working arrangement. The employee retains a statutory right to disconnect outside of normal working hours or once assigned work is completed, unless the employee provides prior written consent to be available beyond those hours. Employers who manage remote workers must ensure their telework agreements comply with this right-to-disconnect requirement.

Termination: Grounds, Notice, and Severance

This is where most Thai employment disputes arise, and where employer mistakes are most costly.

Notice Requirements

For indefinite-term employment, the employer must give written notice at least one full wage payment cycle in advance — meaning notice given on or before payday takes effect at the end of the following pay period. Notice cannot exceed three months. Employers may pay wages in lieu of notice instead.

Severance Pay Under Section 118

Any employee dismissed without grounds under Section 119 (see below) is entitled to severance pay based on length of service. The following table sets out the minimum amounts:

Length of Continuous Service	Minimum Severance Pay
120 days to under 1 year	30 days’ wages
1 year to under 3 years	90 days’ wages
3 years to under 6 years	180 days’ wages
6 years to under 10 years	240 days’ wages
10 years to under 20 years	300 days’ wages
20 years or more	400 days’ wages

Wages in the severance calculation include base salary, bonuses that are paid regularly and consistently, and housing allowances that have become a fixed part of remuneration. Variable bonuses paid at managerial discretion are typically excluded, but this is frequently litigated.

Grounds for Termination Without Severance (Section 119)

Section 119 of the LPA allows an employer to dismiss an employee immediately, without advance notice and without severance pay, only in the following situations:

• The employee commits dishonest acts or intentionally causes harm to the employer
• The employee commits gross negligence that causes serious damage to the employer
• The employee commits a criminal act against the employer
• The employee deliberately violates the employer’s work rules or regulations — provided the employer has previously given a written warning, unless the offence is serious enough to warrant immediate dismissal
• The employee is absent for three consecutive working days without justification, regardless of whether a holiday falls within that period
• The employee is imprisoned following a final criminal conviction

Common employer mistake: Many employers dismiss employees for repeated minor violations without issuing documented written warnings first. Thai labour courts consistently treat such dismissals as unfair terminations — requiring payment of full severance plus additional compensation for unfair dismissal. Always issue a written warning and keep a signed acknowledgement copy in the personnel file before escalating to termination.

Unfair Dismissal

The Establishment of Labour Courts and Labour Court Procedure Act empowers the Labour Court to order reinstatement at the employee’s original wage level where dismissal is found to be unfair. Where the court determines that reinstatement is not practicable — because the working relationship has broken down — it orders monetary compensation. Courts weigh the employee’s age, length of service, financial hardship, the reasons for dismissal, and the severance already paid. This compensation is separate from and in addition to statutory severance pay.

All wages, overtime, and holiday pay must be settled within three days of the dismissal date. Severance pay, payment in lieu of notice, and unused annual leave compensation must be paid on the day of dismissal itself.

Common Pitfalls for Employers in Thailand

Four mistakes account for the majority of employer losses before the Thai Labour Court.

1. Treating probationary employees as disposable. Many employers assume that dismissing an employee during a probationary period carries no consequences. Wrong. An employee who has worked for 120 consecutive days or more is entitled to severance pay, regardless of whether the probation has formally ended. Terminating on day 119 to avoid this threshold is legal, but must be documented carefully — and done before the 120th day, not on it.

2. Misclassifying contractors as employees. Thai courts look at the economic reality of the relationship, not the label on the contract. If the employer controls the worker’s hours, methods, tools, and workplace, the court will treat the relationship as employment regardless of what the contract says. Misclassified contractors who are “terminated” are entitled to all LPA rights, including severance.

3. Using fixed-term contracts to avoid severance. Fixed-term contracts that are renewed repeatedly, or that do not have a genuine project-based or seasonal rationale, are routinely reclassified as indefinite-term employment by Thai courts. Severance then becomes payable on termination as if the employment had been indefinite from the start.

4. Failing to maintain complete personnel records. Without signed acknowledgements of work rules, written warnings, and performance documentation, employers cannot prove just cause for dismissal. Thai courts require documentary evidence — witness testimony alone rarely succeeds.

คำถามที่พบบ่อย

Do employers in Thailand have to provide a written employment contract?

Thai law does not require employment contracts to be in writing, but written contracts are strongly recommended. Without a written agreement, employers have difficulty proving agreed terms in a labour dispute. Fixed-term contracts must always be in writing.

How much severance pay must a Thai employer pay on termination?

Severance pay under Section 118 of the Labour Protection Act ranges from 30 days’ wages (for employees with 120 days to under 1 year of service) up to 400 days’ wages (for employees with 20 or more years of service). No severance is owed if the termination falls under Section 119 grounds such as serious misconduct or criminal conviction.

Can a Thai employer terminate an employee immediately without notice?

Yes, but only on the limited grounds listed in Section 119 of the Labour Protection Act — for example, intentional damage to the employer, dishonesty, gross negligence causing serious harm, three consecutive unexcused absences, or a final criminal conviction. Outside these grounds, proper notice and severance must be paid.

What are the new leave entitlements under the 2025 Labour Protection Act amendments?

As of December 7, 2025, maternity leave increased to up to 120 days per pregnancy (employers pay full wages for up to 60 days). A new 15-day fully paid paternity leave was introduced for employees whose spouses give birth. A new 15-day infant-care leave at 50% wages was added for specific medical cases involving the employee’s child.

Are employers required to prepare work rules in Thailand?

Yes. Any employer with 10 or more employees must establish written work rules in Thai, post them conspicuously in the workplace, and file a copy with the Department of Labour Protection and Welfare within 15 days. Under the 2025 amendments, these employers must also file an annual Employment Terms and Working Conditions Disclosure Form each January.

What happens if a Thai employer fails to pay severance on termination?

An employee who does not receive severance on termination may file a claim with the Labour Court or with the Department of Labour Protection and Welfare within two years. The employer faces the original severance obligation plus interest at 15% per year from the date it was due, as well as potential criminal penalties of up to THB 200,000 fine and/or one year imprisonment.

บทสรุป

Thailand’s employment law framework is employee-protective by design. The Labour Protection Act sets non-negotiable floors on leave, pay, termination procedure, and severance — and the December 2025 amendments pushed several of those floors higher. For an employer, the cost of ignorance is not just the Labour Court judgment: it is the management time, the reputational damage, and the difficulty in justifying future dismissals once an employee knows the system.

The four foundational steps every Thai employer should take in 2026 are: review all employment contracts against the new LPA minimums, update work rules to reflect the 2025 leave entitlements and telework provisions, train managers on the written-warning requirement before disciplinary dismissal, and document every personnel decision at the time it happens rather than reconstructing it after a claim is filed.

For complex situations — contested terminations, contractor reclassification risk, or collective redundancy — specialist employment law advice is essential before taking action.

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