Labour Protection Act B.E. 2541 (1998):
Complete Thailand Legal Guide — Parent Act + 8 Amendments Through No. 9 (B.E. 2568 / 2025) ✓

1. Introduction — The Labour Protection Act B.E. 2541 (Parent Act) and its Amendment History Parent Statute and 27 Years of Legislative Evolution

1.1 The Labour Protection Act B.E. 2541 (1998) — the Parent Act

The Labour Protection Act B.E. 2541 (1998) (พระราชบัญญัติคุ้มครองแรงงาน พ.ศ. 2541) is the parent statute currently governing minimum employment standards in Thailand. It was enacted under the government of Prime Minister Chuan Leekpai and published in the Royal Thai Government Gazette, Volume 115, Part 8 Kor, page 1, dated 20 February B.E. 2541 (1998). By its own terms it entered into force 180 days after publication (Labour Protection Act B.E. 2541, Section 2).

The 1998 Act was enacted expressly to repeal (1) Revolutionary Council Announcement No. 103, dated 16 March B.E. 2515 (1972), and (2) the Act Amending Revolutionary Council Announcement No. 103 (No. 1), B.E. 2533 (1990) — the pre-existing labour protection regime which had been in force for decades and was no longer appropriate to contemporary conditions (Labour Protection Act B.E. 2541, Section 3).

The parent Act covers the essential elements of modern Thai labour protection, including the prohibition on dismissing a female employee by reason of pregnancy, the right of child employees to educational and training leave, employer obligations to pay wage compensation during business suspension, conditions for deduction from employee remuneration, establishment of the Employee Welfare Fund for beneficiaries and heirs, and a penalty regime appropriate to prevailing economic conditions (Explanatory Note to the Labour Protection Act B.E. 2541 (1998)).

1.2 Complete Amendment Timeline (B.E. 2551 – 2568 / 2008 – 2025)

Since its enactment in 1998, the parent Labour Protection Act has been amended eight times — each amendment responding to evolving social, economic, and international labour standards. The timeline below sets out each amendment, the year of enactment, and its principal subject matter (sourced from the Office of the Council of State (OCS) Consolidated Version).

1.3 Current Status (B.E. 2568 / 2025) — Parent Act + 8 Amendments

The Thai labour protection statute currently in force is the Labour Protection Act B.E. 2541 (1998), as amended by Amendments No. 2 through No. 9 (2008 – 2025), together with the Royal Decree on Amendments Consequent upon the Transfer of Governmental Responsibilities under the Reorganisation of Ministries, Bureaus and Departments Act B.E. 2545 (2002) and its (No. 3) B.E. 2551 (2008), the Head of the National Council for Peace and Order Order No. 21/2560 (2017) on business facilitation amendments, and the Administrative Fines Act B.E. 2565 (2022) — which converts certain criminal penalties under the Labour Protection Act into administrative fines.

Amendment No. 9 (B.E. 2568 / 2025) — the most recent in the chain — responds to three principal concerns: (1) pro-natalist family policy, addressing Thailand's declining birth rate; (2) gender equality and recognition of the father's role in newborn care; and (3) closing a long-standing legal gap affecting government outsourced service personnel — a matter long sought by both public agencies and private contractors (Explanatory Note to the Labour Protection Act (No. 9) B.E. 2568 (2025)).

2. Key Changes of Amendment No. 9 — Effect on the Parent Act B.E. 2541 How the 2025 Amendment Modifies the 1998 Labour Protection Act

Amendment No. 9 (B.E. 2568 / 2025) produces six principal changes to the parent Labour Protection Act B.E. 2541 (1998), comprising both amendments to existing sections and insertion of new sections. The precise statutory effect is as follows:

• New Section 4/1 — rights of natural persons engaged by government agencies under outsourced service arrangements (Section 4/1 added by the Labour Protection Act (No. 9) B.E. 2568).
• Section 41 Paragraph 1 amended — maternity leave extended to 120 days (previously 98) (Section 41 Paragraph 1 amended by the Labour Protection Act (No. 9) B.E. 2568).
• Section 41 Paragraph 4 added — extended leave to care for a child with illness, abnormality or disability (Section 41 Paragraph 4 added by the Labour Protection Act (No. 9) B.E. 2568).
• New Section 41/1 — 15 days of partner leave (PDF: สิบห้าวัน). The section uses คู่สมรส and does not write working days or โดยชอบด้วยกฎหมาย (Section 41/1 added by the Labour Protection Act (No. 9) B.E. 2568).
• Section 59 amended in full — employer-paid maternity wages extended to 60 days (previously 45) (Section 59 amended by the Labour Protection Act (No. 9) B.E. 2568).
• New Sections 59/1 and 59/2 — wages and benefits during extended child-care leave and partner leave (Sections 59/1 and 59/2 added by the Labour Protection Act (No. 9) B.E. 2568).

In aggregate, Amendment No. 9 inserts four new sections (4/1, 41/1, 59/1, 59/2) and a new fourth paragraph of Section 41, and amends Section 41 Paragraph 1 and Section 59 in full. The detailed analysis of each provision follows:

2.1 Section 41 — Maternity Leave Extended to 120 Days

The provision generating the most direct impact on female employees across the country is the extension of maternity leave from 98 days to 120 days in Section 41 of the Labour Protection Act B.E. 2541 (as amended up to No. 9 B.E. 2568).

      มาตรา ๔๑   ให้ลูกจ้างซึ่งเป็นหญิงมีครรภ์มีสิทธิลาเพื่อคลอดบุตรครรภ์หนึ่งไม่เกินหนึ่งร้อยยี่สิบวัน หรือตามจำนวนวันที่กำหนดในพระราชกฤษฎีกา
    
          วันลาเพื่อคลอดบุตรตามมาตรานี้ให้หมายความรวมถึงวันลาเพื่อตรวจครรภ์ก่อนคลอดบุตรด้วย
    
          วันลาตามวรรคหนึ่ง ให้นับรวมวันหยุดที่มีในระหว่างวันลาด้วย
    
          ลูกจ้างหญิงซึ่งใช้สิทธิลาเพื่อคลอดบุตรตามวรรคหนึ่งแล้ว มีสิทธิลาต่อเนื่องเพื่อเลี้ยงดูบุตรได้อีกไม่เกินสิบห้าวัน ในกรณีที่บุตรมีภาวะการเจ็บป่วยที่เสี่ยงต่อการเกิดโรคแทรกซ้อน มีความผิดปกติ หรือมีภาวะความพิการ  ทั้งนี้ ให้ลูกจ้างแสดงใบรับรองแพทย์แผนปัจจุบันประกอบการลาด้วย

Read มาตรา ๔๑ in the box, all four paragraphs. The PDF uses one hundred and twenty days, not 98.

The 120-day period is measured in calendar days and includes any weekly rest days and statutory public holidays that fall within the leave period. This means that the net actual leave available to the employee — particularly outside of holiday-heavy months — is effectively equivalent to the full 120 calendar days stated in the Act.

Practically speaking, the Act does not prescribe whether the leave must commence before or after the birth. Established HR practice in Thailand has generally been for employees to commence leave approximately 30 to 45 days before the anticipated delivery date, with the balance taken post-partum. Where an employee does not take pre-natal leave, the full 120-day entitlement runs from the date of actual delivery.

2.2 Section 41/1 — Partner Leave: 15 Days (New Provision)

Section 41/1 is an entirely new provision with no equivalent in any prior version of the Labour Protection Act. The PDF grants an employee leave to assist a spouse who has given birth, for not more than fifteen days.

      มาตรา ๔๑/๑   ให้ลูกจ้างมีสิทธิลาเพื่อช่วยเหลือคู่สมรสซึ่งคลอดบุตรครรภ์หนึ่งได้ไม่เกินสิบห้าวัน โดยใช้สิทธิก่อนหรือในวันที่ลาภายในเก้าสิบวันนับแต่วันที่คลอดบุตร

      มาตรา ๕๙/๒   ให้นายจ้างจ่ายค่าจ้างให้แก่ลูกจ้างซึ่งใช้สิทธิลาตามมาตรา ๔๑/๑ เท่ากับค่าจ้างในวันทำงานตลอดระยะเวลาที่ลาแต่ไม่เกินสิบห้าวัน

Read มาตรา ๔๑/๑ in the box. The PDF says คู่สมรส and สิบห้าวัน. It does not say working days, and it does not say lawfully registered. Wages sit in มาตรา ๕๙/๒, a different section.

Key elements of Section 41/1 that both employers and employees must understand are as follows:

1. Eligible persons: มาตรา ๔๑/๑ uses the word คู่สมรส. It does not write โดยชอบด้วยกฎหมาย in this section. Under the Civil and Commercial Code Book V (Section 1457), as amended by the Act Amending the Civil and Commercial Code (No. 24) B.E. 2567 (marriage equality, in force 23 January B.E. 2568 (2025)), a spouse is a person who has registered a marriage, whether a male-female or a same-sex couple; living together without registering a marriage does not create this right.
2. Duration: Not more than fifteen days in the PDF. It does not write working days.
3. Remuneration: Wages are in มาตรา ๕๙/๒, a different section.
4. Timing of leave: The PDF requires the right to be used before or on the leave date, within ninety days from the date of birth.

2.3 Section 59 — Employer-Paid Maternity Wages Extended to 60 Days

The extension of the employer's obligation to pay maternity wages from 45 days to 60 days in Section 59 of the Labour Protection Act B.E. 2541 (as amended up to No. 9 B.E. 2568), is the provision that most directly affects employer payroll costs.

      มาตรา ๕๙   ให้นายจ้างจ่ายค่าจ้างให้แก่ลูกจ้างซึ่งเป็นหญิงมีครรภ์ในวันลาเพื่อคลอดบุตรตามมาตรา ๔๑ วรรคหนึ่ง เท่ากับค่าจ้างในวันทำงานตลอดระยะเวลาที่ลา แต่ไม่เกินหกสิบวันหรือตามที่กำหนดในพระราชกฤษฎีกา

Read มาตรา ๕๙ in the box. Social-security substitute benefits are another statute and are not in this box.

The payment structure for the 120-day maternity leave period is therefore as follows. Leave days for which neither wages nor the Social Security benefit are payable are unpaid unless the employer agrees otherwise:

2.4 Section 4/1 — Government Outsourced Service Personnel: New Labour Protection Rights

Section 4/1 is a new provision that resolves a long-standing legal gap — the situation of natural persons whom government agencies and other state bodies engage under outsourced-service (จ้างเหมาบริการ) or similar arrangements and who previously had no effective labour protection.

The practical consequences of Section 4/1 are as follows:

1. Duty of the hiring body: The government agency or state body that hires and supervises the person must ensure that the person receives the listed rights, on the criteria and conditions to be set in a Ministerial Regulation [unconfirmed — check whether the Ministerial Regulation has been issued].
2. Scope of application: The provision concerns natural persons hired by the state body itself whose work the body controls and supervises. Its text does not impose a supervisory duty on government agencies in respect of the employees of private service contractors.
3. Impact on private companies: Private companies holding government service contracts should not treat Section 4/1 as creating a monitoring right over their own employees; they should take advice on whether the arrangement falls within Section 4/1 and continue to give their own employees their statutory entitlements under the Act.
4. Leave rights: Maternity leave is among the rights listed in Section 4/1; the detailed conditions are those set in the Ministerial Regulation.

3. Impact on Employers Compliance Obligations and Cost Implications

The entry into force of the Labour Protection Act (No. 9) B.E. 2568 (2025) creates new legal obligations and operational challenges for employers that require prompt action in human resources management systems.

3.1 HR Policy Updates Required

The following employment documents and policies require urgent review and updating:

1. Work Rules (ข้อบังคับเกี่ยวกับการทำงาน): Employers with ten or more employees are required under Section 108 of the Labour Protection Act B.E. 2541 (1998) to maintain written work rules. Those work rules must be updated to reflect the new leave entitlements — in particular by adding "partner leave to assist a spouse who has given birth" as a new category of statutory leave, a type that did not previously exist in the Act.
2. Leave Request Forms: Leave application forms must be redesigned or updated to accommodate the new Section 41/1 partner leave category and to specify the supporting documentation required — such as a marriage certificate, birth certificate, or medical certificate confirming the birth.
3. Employment Contracts: Any employment contract that references maternity leave of 98 days or employer-paid maternity wages of 45 days must be amended to reflect the current statutory standards of 120 days and 60 days respectively. Any contractual provision that offers fewer rights than the statutory minimum has no binding effect to the extent it falls below the minimum.
4. Payroll Systems (HRIS / Payroll): Payroll and HR information systems must be configured to calculate employer-paid maternity wages for 60 days and to coordinate with the employee's separate Social Security childbirth-leave benefit (Social Security Act, Section 67).
5. Internal Employee Communication: Employers must communicate the new rights clearly to all employees. The fact that an employee was not aware of their statutory entitlements is not a defence available to an employer who fails to provide those entitlements.

3.2 Additional Labour Costs

Amendment No. 9 affects employer labour costs in two primary areas:

Area 1: Increased Maternity Pay Obligation. Employers must absorb maternity wages for 60 days per maternity event, up from 45 days — an increase of 33% in the employer's direct cost per maternity case. For large organisations with a significant female workforce, this cost increment has material accounting and budget implications.

Area 2: New Partner Leave Cost. The partner leave entitlement of up to 15 days under Section 41/1 is an entirely new cost that did not exist before Amendment No. 9. Uniquely, this obligation falls entirely on the employer — unlike maternity leave, there is no Social Security Fund contribution to defray partner leave wages.

3.3 Employment Contract and Work Rules — Legal Risk Assessment

Employers face three material legal risks in the process of updating their employment documentation:

4. Impact on Employees New Statutory Rights and How to Exercise Them

From the perspective of employees, the Labour Protection Act (No. 9) B.E. 2568 (2025) represents a meaningful step forward in employment security and family support, delivering new rights to both female employees who are pregnant and employees who are the spouse of a woman who has given birth.

4.1 New Rights for Employees

4.2 How to Exercise Your Rights — Step-by-Step

Employees should follow these steps to ensure full receipt of their statutory entitlements:

4.3 Continuing Rights Under Prior Law (Unamended)

In addition to the new rights introduced by Amendment No. 9, employees continue to enjoy the protections established by the unamended provisions of the Labour Protection Act B.E. 2541 (1998), including:

1. Prohibition on overtime and night work during pregnancy: Under the Labour Protection Act B.E. 2541 (1998), Section 39/1, employers are prohibited from requiring a pregnant female employee to work between 22:00 and 06:00, to work overtime, or to work on holidays (Section 39 separately lists types of work she may not be required to do). For employees in executive, academic, clerical, finance or accounting positions, overtime on working days is allowed only where it does not affect the employee's health and she consents each time.
2. Prohibition on dismissal by reason of pregnancy: Under Section 43, dismissal of a female employee by reason of her pregnancy is expressly prohibited. [unconfirmed — the text of Section 43 contains the prohibition only and does not state who bears the burden of proving that a dismissal was not by reason of pregnancy.] A breach is punishable under Section 144 (imprisonment not exceeding 6 months and/or a fine not exceeding THB 100,000).
3. Sick leave: Under Section 32, employees are entitled to sick leave for as many days as they are actually ill, with wages payable under Section 57 for not more than 30 working days per year.
4. Personal leave: Under Section 34, employees are entitled to leave for necessary personal business of not less than 3 working days per year; wages for that leave are payable under Section 57/1, up to 3 working days per year.

5. Evolution Table — LPA B.E. 2541 through Amendment No. 9 (B.E. 2568) 27 Years of Legislative Evolution — All Amendments in One View

This section presents the evolution of the Labour Protection Act B.E. 2541 on its most important issues, from the original enactment through the current consolidated text (including all eight amendments). It also retains the deep-dive comparison between Amendment No. 7 (2019) and Amendment No. 9 (2025), which is most directly relevant to employer wage costs.

5.1 Longitudinal Evolution Table (B.E. 2541 → 2568)

Note: "—" indicates that the amendment did not modify the issue (value remains unchanged from the prior column). The table above shows only the most significant issues — refer to the References for a complete list.

5.2 Deep-Dive Comparison — Amendment No. 7 (2019) vs. Amendment No. 9 (2025)

For clarity on the issues directly affecting employer wage costs and employee rights, the following table compares leave and wage provisions between the two most recent amendments.

6. Practical Recommendations for Employers Compliance Action Plan — LPA Amendment No. 9

Based on the analysis of the Labour Protection Act (No. 9) B.E. 2568 (2025) set out above, Legal Advance Solution Co., Ltd. offers the following practical recommendations for employers to achieve compliance and minimise legal risk.

6.1 Urgent Actions

1. Review all Work Rules (ข้อบังคับเกี่ยวกับการทำงาน): Audit every set of work rules currently in force, check all leave-related provisions, and amend them to reflect the rights under Amendment No. 9 as soon as possible. Failure to update work rules may itself constitute a violation under Section 108 of the Labour Protection Act B.E. 2541 (1998), which mandates written work rules for employers with ten or more employees.
2. Update standard employment contracts: Verify that no standard employment contract contains terms that set maternity leave or employer-paid maternity wages below the new statutory minimums. Any such term has no binding effect to the extent it falls below the statutory minimum, and the employer remains liable for the difference.
3. Train HR and Payroll teams: Conduct internal training sessions for HR officers and payroll staff on the new statutory entitlements and the correct calculation of employer-paid wages — particularly the employer's 60-day obligation and the separate Social Security Fund childbirth-leave benefit (50% of wages for 90 days, the Social Security Act, Section 67).

6.2 Long-Term Cost Management

1. Plan replacement staffing: For key roles that may be affected by extended maternity or partner leave, develop a contingency plan for temporary replacement or cross-training programmes to ensure operational continuity during extended absences.
2. Revise annual labour budgets: Assess the financial impact of the new entitlements on the annual payroll budget — particularly the partner leave cost, which is entirely new and has no precedent in prior law.
3. Implement a Leave Management System: Consider deploying or upgrading a leave management system to track each employee's statutory leave entitlements, reduce the risk of calculation errors, and maintain a transparent and auditable record of leave events.

6.3 Legal Risk Prevention Measures

1. Establish a Leave Notice Policy: Set out a clear internal policy specifying how far in advance employees must notify the employer of planned maternity or partner leave, together with the supporting documentation required, to ensure a structured and auditable leave process.
2. Maintain systematic leave records: Document all leave events with associated supporting documents and retain records for at least 2 years as a matter of legal risk management. In the event of a dispute, such records are critical evidence.
3. Consult a labour law adviser: Larger organisations with complex workforce structures should engage a labour law specialist to conduct a comprehensive compliance review of all HR documentation against the requirements of Amendment No. 9.
4. Government outsourced-service engagements (Section 4/1): Government bodies, and companies that supply personnel to them, should check whether Section 4/1 applies to the arrangement — that is, natural persons hired by the government body itself under outsourced-service or similar arrangements — and confirm that the listed rights are provided on the conditions set in the Ministerial Regulation.

6.4 Document Compliance Checklist

7. Conclusion LPA Amendment No. 9 — Key Takeaways

The Labour Protection Act B.E. 2541 (1998) is the parent statute that has now been amended eight times over a 27-year period (B.E. 2551 – 2568 / 2008 – 2025), each amendment responding to evolving social, economic, and international labour standards. The most recent amendment, Labour Protection Act (No. 9) B.E. 2568 (2025), is a significant reform reflecting the government's recognition of three structural challenges: declining birth rates, persistent gender inequality in the workplace, and a long-standing legal gap affecting government outsourced service personnel. The extension of maternity leave to 120 days and the creation of a 15-day partner leave entitlement are meaningful steps that bring Thailand materially closer to international standards.

For employers, this legislation creates new obligations that demand prompt action: updating work rules, employment contracts, payroll systems, and HR policies to align with the new law. Delay in doing so risks labour complaints, litigation, and reputational damage — costs that substantially outweigh the effort of early compliance.

For employees, the Act strengthens rights and protections, particularly for those at the family formation stage of life — both mothers who need adequate time for post-natal recovery and infant care, and fathers who wish to participate meaningfully in caring for a newborn. Every employee should be aware of their rights and follow the proper steps to exercise them.

One area that warrants continued monitoring is the developing body of administrative guidance from the Department of Labour Protection and Welfare, labour inspector practice, and Labour Court decisions that will interpret and apply the provisions of Amendment No. 9 in practice — particularly on issues that remain ambiguous, such as the precise timing window for partner leave or the counting of maternity leave days in edge cases.

8. Frequently Asked Questions (FAQ) LPA Amendment No. 9 — Common Questions

Q1: When does the Labour Protection Act Amendment No. 9 (B.E. 2568) take effect?

The Labour Protection Act (No. 9) B.E. 2568 (2025) was published in the Royal Gazette on 7 November B.E. 2568 (2025) and took effect upon the lapse of 30 days from the date of publication (7 December B.E. 2568 (2025)); the effective date should always be checked against the Royal Gazette and the Ministry of Labour's explanatory notes. All employers with employees covered by the Act are required to comply from the date the law entered into force. Any violation of employees' rights occurring after the effective date carries full legal consequences.

Q2: How is the 120-day maternity leave calculated?

The 120-day period under Section 41 of the Labour Protection Act B.E. 2541 (as amended up to No. 9 B.E. 2568) is measured in calendar days, inclusive of weekly rest days and statutory public holidays falling within the leave period. This is distinct from the partner leave under Section 41/1, for which the section says "fifteen days" without stating whether working days or calendar days are meant [unconfirmed — awaiting guidance from the Department of Labour Protection and Welfare]. The employee may commence maternity leave before or after the birth, but the total leave across both periods must not exceed 120 days.

Q3: How many times per year can partner leave under Section 41/1 be taken?

Section 41/1 grants leave to assist a spouse who has given birth per pregnancy (ครรภ์หนึ่ง), of not more than fifteen days, so the right is tied to each childbirth event. Where there is one birth in a given year, 15 days of leave may be taken. Where twins or multiples are born in a single delivery event, that still constitutes one birth event, so 15 days of leave applies. [Note: Employers should monitor guidance from the Department of Labour Protection and Welfare for further clarification.]

Q4: If an employer already provides more generous leave than the statutory minimum, does Amendment No. 9 create any problems?

Labour protection law sets a floor — a statutory minimum that cannot be contracted below. Employers are entirely free to offer more generous terms than the law requires, such as maternity leave exceeding 120 days or employer-paid wages exceeding 60 days. These superior terms do not conflict with the Act. However, if an employer has previously provided terms more generous than the statutory minimum and later wishes to reduce them to the statutory standard, employee consent will generally be required, as the superior terms may have become an agreed condition of employment.

Q5: Does Amendment No. 9 apply to employers with fewer than 10 employees?

The Labour Protection Act B.E. 2541 (1998) and its amendments apply to employers with one or more employees. The maternity leave and partner leave rights introduced by Amendment No. 9 apply to all employers covered by the Act, regardless of the number of employees, unless Section 4 or a Ministerial Regulation provides an exception. Section 4 excludes central, provincial and local administration and state enterprises under the State Enterprise Labour Relations law, and a Ministerial Regulation may exclude any category of employer in whole or in part.