You are using an outdated browser and your browsing experience will not be optimal. Please update to the latest version of Microsoft Edge, Google Chrome or Mozilla Firefox. Install Microsoft Edge

October 4, 2013

Important Considerations for Employment Contracts under Thai Law

Bangkok Post, Corporate Counsellor Column

Under Thai law, there are no requirements that employment contracts be made in writing. For some employers, this may create the perception that they can simply reach a cursory agreement with an employee on a few basic issues, such as job role and salary, and work out any other issues as they arise. In reality, this could not be further from the truth.

It is strongly advised that employers and employees have written contracts to clearly specify the terms and conditions of employment. Later, if any dispute arises, the parties can refer to a written contract to help determine the actual agreed-upon provisions.

In Thailand, employment contracts can be broadly categorized into two main types: fixed-term and open-ended. Accordingly, it is important to be aware of the type of contract being offered or entered into, as the rights and legal ramifications associated with each differ immensely.

Fixed-Term Employment Contracts

With provisions that specify the start and end dates of employment, this type of contract will end when the agreed period of employment expires, without the need for advance notice of termination. The contract cannot be terminated prior to the expiration of the agreed period, unless there is termination with cause.

The Supreme Court has ruled that fixed-term contracts must not contain any provisions that purport to allow an employer or an employee to terminate it prior to the expiration of the agreed period, or to extend the term. If it contains such provisions, it will lose its status as a fixed-term contract.

By way of an example, if a contract contains the provision that “the employment shall be for a period of 12 months, but either party may terminate the employment contract by giving the other party two months’ advance notice,” then it would not be effective as a fixed-term contract.

Another important consideration is the parties’ performance. Even if a fixed-term contract is in place, if the employee continues working and the employer continues paying wages after the expiration of the agreed period of employment, then the fixed-term contract would effectively convert into an open-ended contract.

There is no requirement to give advance notice of termination for fixed-term contracts. In practice, however, it is still advisable for employers to inform their employees, preferably in writing, that in accordance with the contract, the employment will expire at the end of the agreed period. This will help to ensure that everyone is on the same page.

Open-Ended Employment Contracts

Such contracts will only specify the commencement date of employment but not the end. An employee may resign or an employer may terminate the contract at any time, subject to the contract, their rights and obligations under law, and the employer’s Work Rules and Regulations.

For open-ended contracts, advance notice of termination is required, unless there is termination with cause and/or unless the employer is not required to provide advance notice of termination by law.

Necessary Provisions in Employment Contracts

To adequately safeguard the basic rights of both the employer and employee, employment contracts should always contain the following provisions:

  • Date the contract was made;
  • Names of parties to the contract;
  • Commencement date of employment;
  • Expiry date (for fixed-term contracts);
  • Probationary period;
  • Duties and responsibilities of the employee;
  • Wages, benefits and welfare;
  • Security deposit/guarantee (if applicable);
  • Working days, hours and holidays;
  • Position and right to change position;
  • Workplace address/location;
  • Non-competition and non-solicitation;
  • Confidentiality/non-disclosure;
  • Intellectual property;
  • Reference to Work Rules and Regulations; and
  • Termination of employment.

Language Requirements for Written Contracts

One of the most frequent questions clients ask is whether it is mandatory for contracts to be written in the Thai language. It is not.

However, if an employee is Thai and cannot understand English well enough to fully comprehend the terms of the contract, then it is strongly advisable to have the contract written in Thai or to have bilingual provisions. This way, both parties can understand the terms, and it guards against employees raising the issue that they misunderstood the terms in English.

Fair Contract Terms

Although an employer and employee are generally free to negotiate and agree to the terms and conditions of a contract, such terms and conditions must be fair.

If any terms or conditions result in the employer having excessive advantage over an employee, the court would be empowered to modify them as it deems fair and appropriate. Therefore, employers need to take great care in crafting their contracts to ensure legal compliance.

RELATED INSIGHTS​ 

August 20, 2026
As part of its membership in Lex Mundi, Tilleke & Gibbins has released the latest edition of its Guide to Doing Business in Thailand, providing an overview of the legal, regulatory, and commercial considerations for companies establishing or expanding operations in Thailand. The 2026 edition offers practical insight into the country’s business environment, investment framework, and operational requirements. The guide covers a wide range of topics relevant to foreign and domestic investors, including: Investment incentives and promotion schemes Financial facilities and banking regulations Exchange controls and money transfers Import and export regulations Business structures and incorporation options Requirements for establishing a business Operational and compliance considerations Business cessation and insolvency procedures Employment and labor laws Taxation Immigration and visa requirements Prepared by Tilleke & Gibbins lawyers across multiple practice areas, the publication outlines key aspects of doing business in Thailand, including foreign investment restrictions, regulatory compliance obligations, corporate structures, employment requirements, and recent legal and economic developments affecting investors. The publication forms part of Lex Mundi’s Country Guides series, a global collection of jurisdiction-specific reference materials prepared by member firms around the world. Together, these guides help companies evaluate opportunities, compare regulatory environments, and plan international business activities across multiple markets. The full Guide to Doing Business in Thailand 2026 is available through the button below.
July 30, 2026
Thailand’s cabinet has approved a draft ministerial regulation introducing significant changes to the calculation of old-age pension and old-age gratuity benefits under the Social Security Fund. The reform would replace the current pension calculation method with a career average revalued earnings (CARE) model designed to better reflect an individual’s lifetime contributions while supporting the long-term financial sustainability of the Social Security Fund. The changes are also intended to improve fairness and align Thailand’s pension framework with international practices. Key proposed changes under the draft ministerial regulation are outlined below. CARE-Based Formula for Old-Age Pension Calculations Currently, old-age pensions are calculated based on the insured person’s average salary over the preceding 60 months. The proposed regulation would replace this approach with the CARE model, under which pension benefits will be calculated based on earnings throughout an individual’s entire working life. Historical earnings will be revalued to reflect their present value before the pension benefit is calculated. According to the Ministry of Labor, this change is intended to better align pension benefits with an individual’s lifetime contribution history and provide a fairer basis for calculating benefits. Pension Accrual Rate for Contributions Exceeding 180 Months Under the current rules, insured persons who contribute for more than 180 months receive an additional pension accrual of 1.5% for each completed 12-month contribution period, with any remaining months disregarded. The proposed regulation would instead calculate the additional accrual on a monthly basis at a rate of 0.125% of actual monthly contributions; this aims to make pension benefits more accurately reflect the actual duration of each individual’s contribution history. Transitional Protections for Insured Persons The draft regulation includes transitional protections for both existing pension recipients and those who will become eligible within five years of the CARE model taking effect. For existing recipients, the following protections
June 4, 2026
On May 19, 2026, the Cabinet of the Royal Thai Government approved, in principle, revisions to Thailand’s visa exemption scheme and visa on arrival (VOA) program, as proposed by the Ministry of Foreign Affairs and the Ministry of Tourism and Sports. The revisions represent a tightening of Thailand’s immigration framework and will affect a broad range of short-term visitors. Background On July 15, 2024, Thailand expanded its visa exemption scheme by increasing the permitted period of visa-exempt stay from 30 days to 60 days in order to promote tourism, support the country’s post-pandemic economic recovery, and facilitate international travel. Under this revised scheme, passport holders from 93 countries and territories (an increase from the previous 57 countries and territories) have been permitted to enter Thailand without a visa and remain in the country for up to 60 days per entry for purposes including tourism, business engagements, urgent work, and ad hoc assignments. In addition, eligible visitors may apply at the Thai Immigration Bureau for a further 30-day extension of stay. Key Changes The proposed revisions would revoke the current 60-day exemption and reinstate the previous stay period, thereby reducing the maximum permitted stay for eligible travelers to 30 days per entry. In addition, the number of countries and territories eligible under the 30-day visa-exemption scheme is expected to be reduced to 54. The scope of the VOA scheme would likewise be significantly narrowed, with the number of eligible countries reduced from 31 countries to just four (Azerbaijan, Belarus, Serbia, and India). Further, Thailand is expected to introduce a new 15-day visa exemption category for nationals of Seychelles, the Maldives, and Mauritius. The revised framework would also limit each country or territory to a single visa exemption privilege in order to simplify Thailand’s immigration framework and reduce overlapping immigration privileges.
April 29, 2026
Vietnam’s education sector is entering a new regulatory era. On December 10, 2025, the National Assembly adopted a series of new and amended laws in the field of education, including the 2025 Law on Vocational Education, the 2025 Law on Higher Education, and the amended Law on Education No. 123/2025/QH15 (Amended Law on Education). These laws together took effect on January 1, 2026, marking a significant reform of Vietnam’s legal framework governing the education sector. The legislative package introduces a new lawmaking approach under which foundational and principle-based provisions are codified in the Amended Law on Education, while the Law on Higher Education and the Law on Vocational Education serve as specialized statutes providing supplementary, sector-specific regulatory detail tailored to their respective subsectors. The Amended Law on Education fundamentally restructures how educational institutions are established, governed, and licensed, with direct implications for private investors, foreign-invested entities, and education service providers operating in Vietnam. Below are several highlights of the key changes under the amended law, especially in the private sector, that stakeholders should understand: Change in the National Education System In addition to primary education, lower secondary (junior high school) education is now compulsory in Vietnam. Accordingly, diplomas are no longer awarded upon completion of lower secondary school but only for upper education levels. The national education system is also expanded through the introduction of vocational high school as a new level of vocational education. Such reform creates additional learning pathways that not only enable learners to pursue both further education and participate in the labor market, but also better align education and training with socioeconomic development needs. New Hurdle for Joint Investors: Mandatory Corporate Entity Requirement Where two or more investors jointly establish an education institution, the investors are no longer permitted to directly establish such an institution.