Book 2 — Obligations

Section 425 — Employer joint liability for employee tort

Statutory text (Thai original)

นายจ้างต้องร่วมกันรับผิดกับลูกจ้างในผลแห่งละเมิดซึ่งลูกจ้างได้กระทำไปในทางการที่จ้างนั้น

Verbatim from the Royal Gazette / Office of the Council of State

English translation

An employer is jointly liable with his employee for the consequences of a wrongful act committed by such an employee in the course of his employment.

This English translation is provided for reference only and has not yet been firm-verified. Always rely on the Thai original.

Firm annotation

Section 425 imposes joint and several liability without fault on the employer. Plaintiffs prefer to sue both because employers have deeper pockets and insurance. Two recurring questions: (1) was the act "in the course of employment" or a personal frolic? — courts read this broadly when the act was foreseeable from the job duties (e.g. driver causing accident on delivery route = in course; same driver later getting drunk and brawling = personal frolic); (2) the employer's recovery from the employee under §426 is theoretically available but rarely worth pursuing in practice. SC decision 2794/2565 is the leading recent authority confirming the broad reach of §425 in delivery and ride-share contexts.

High importance

Why this matters in practice

Lawyers: The key test is whether the employee was acting 'in the course of employment' — not merely whether the act occurred during working hours. Courts look at whether the employer authorised or implicitly permitted the activity. Apparent authority (employer's conduct holding out the employee as authorised) can extend section 425 liability even outside formal duty hours. The employer may seek indemnity from the employee under section 426. Laypersons: If a company's employee harms you while doing their job, you can sue both the employee and the employer. You do not need to pursue only the employee.

Legislative history

Part of the original Civil and Commercial Code codification; no major subsequent amendment.

  • employer liability
  • joint and several
  • course of employment
  • employee tort
  • vicarious liability

Supreme Court decisions interpreting this section

  1. Supreme Court Judgment No. 15199/2558 (2015)

    An employer is jointly liable under section 425 for an employee's road accident in the course of employment; a limited partner who publicly acts as employer loses limited-liability protection.

    Defendant 6 (employee of defendant 4) drove a cargo truck in the course of defendant 4's business and caused an accident. Defendant 4 as employer was jointly liable under section 425. Defendant 3, as managing partner, was unlimited jointly liable under the Partnership Act. Defendant 2, a limited partner who had publicly represented himself as an employer of defendant 6 and negotiated damages on behalf of the partnership, lost the benefit of limited liability and was jointly liable as well.

    Read the full decision (deka.in.th)

  2. Supreme Court Judgment No. 14931/2557 (2014)

    Where employees negligently store vault access credentials in breach of the employer's own security rules, enabling theft from a customer's safe-deposit box, the employer is vicariously liable under section 425.

    Bank employees responsible for safekeeping safe-deposit vault codes and keys stored them negligently in unlocked desk drawers contrary to the bank's own regulations, enabling burglars to access and steal the plaintiff's property from the safe-deposit box. The Court held the employees' negligence was committed in the course of their employment duties; the bank as employer was jointly and severally liable under section 425.

    Read the full decision (deka.in.th)

  3. Supreme Court Judgment No. 7829/2553 (2010)

    Assigning a government employee full ongoing responsibility for an official vehicle constitutes implicit authorisation to use it at any time; an accident caused while using the vehicle in that capacity falls within the employer's section 425 liability.

    A Sub-district Administrative Organisation (SAO) assigned its permanent secretary full responsibility for a vehicle. The secretary used the vehicle during what was technically after office hours to drive home, instructing defendant 1 to drive. The Court held that the SAO's assignment of full vehicle responsibility to the secretary meant the secretary — and through him the SAO — had implicit authority to use the vehicle at any time; defendant 1's negligent driving during that trip was therefore 'in the course of employment' of the SAO, which was jointly liable under section 425.

    Read the full decision (deka.in.th)

Curated decisions with case numbers verified against the Supreme Court database. English renderings are the firm's editorial translation for study.

Cited in 135 Supreme Court decisions (1952 to 2024)

Selected citing decisions

  • Decision 882/2567 (2024)
  • Decision 4197/2563 (2020)
  • Decision 355/2563 (2020)
  • Decision 2417/2562 (2019)
  • Decision 5985/2561 (2018)
  • Decision 381/2560 (2017)
  • Decision 6282/2559 (2016)
  • Decision 14217/2558 (2015)

This list is selected automatically, weighted towards judgments that turn on this section rather than ones that merely recite it when passing sentence. It has not yet been reviewed by the firm.

Most often cited alongside

Sections that appear in the same judgments as this one most often. The figure is the number of decisions.

Counted across the firm's corpus of 83,652 Supreme Court decisions, 1921 to 2026. The count is complete; the stated year range trims rare outliers so it describes where the citations actually sit. These figures are computed by us and are not official court statistics.

Related guides on ThaiLawOnline

Cite this section

  • Plain citation Civil and Commercial Code, s. 425 (Thailand)
  • Academic citation Civil and Commercial Code (Thailand), s. 425. ThaiLawOnline, https://www.thailawonline.com/thai-civil-code/section-425/ (accessed 8 August 2026).
  • Thai citation ป.พ.พ. มาตรา 425
  • Permalink https://www.thailawonline.com/thai-civil-code/section-425/
  • Embed on your site <blockquote cite="https://www.thailawonline.com/thai-civil-code/section-425/"><p>An employer is jointly liable with his employee for the consequences of a wrongful act committed by such an employee in the course of his employment.</p><footer>Civil and Commercial Code, s. 425 (Thailand) — <a href="https://www.thailawonline.com/thai-civil-code/section-425/">ThaiLawOnline</a></footer></blockquote>

The Thai text is authoritative. The English is an unofficial translation by ThaiLawOnline, free to reuse with attribution.

This is educational reference, not legal advice. Consult a qualified Thai lawyer before relying on any provision.

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