A question we hear regularly from foreign founders setting up in Thailand: "We follow good HR practices. Do we really need to worry about local labor law?"
The answer is yes — because "good HR practices" and Thai legal compliance are not always the same thing. Thailand's Labor Protection Act (LPA) sets specific requirements that override general good practice, and the penalties for non-compliance range from administrative fines to criminal liability for management.
This article covers the eight things we think every founder in Thailand should understand — regardless of whether they have an HR team.
1. Probationary Periods Are Not What You Think
Many founders assume that a probationary period means the first 90 (or 180) days are a "no strings attached" assessment period. This is not accurate under Thai law.
Employees can be terminated during probation without the standard notice period requirements — but they are still entitled to wages for work performed, and cannot be dismissed for reasons that would be discriminatory or in bad faith. A poorly written probation clause can also inadvertently extend protections beyond what you intended.
The standard approach is to specify the probationary period explicitly in the employment contract (120 days is common), with clear criteria for what constitutes successful completion.
2. Severance Pay Is Mandatory and Has a Staircase Structure
This surprises many employers. Thai labor law requires severance pay when an employee is terminated without cause, based on length of service:
- 120 days to 1 year: 30 days' wages
- 1–3 years: 90 days' wages
- 3–6 years: 180 days' wages
- 6–10 years: 240 days' wages
- 10–20 years: 300 days' wages
- 20+ years: 400 days' wages
"Without cause" covers a broad range of situations — including restructuring and position elimination. Termination for cause requires documented evidence and specific procedural steps.
3. The Difference Between "Cause" and "Gross Misconduct"
Thai law distinguishes between termination "for cause" and termination for "gross misconduct." The distinction matters because gross misconduct allows termination without notice or severance — but the bar is high and the process must be followed precisely.
Gross misconduct under Thai law includes things like: dishonesty causing damage to the employer, intentional criminal acts, causing serious damage to the employer's property, and abandonment of employment.
Poor performance, disagreements over direction, or cultural fit issues do not meet this standard. Trying to use the gross misconduct pathway for ordinary terminations is a common — and expensive — mistake.
4. Social Security Is Not Optional
All employees who work for more than 30 hours per week must be registered with the Social Security Office (SSO) within 30 days of employment. Both employer and employee contribute 5% of monthly salary (capped at a base salary of 15,000 THB, so maximum contribution is 750 THB per side per month).
As an employer, you are responsible for withholding the employee's contribution and remitting both contributions to the SSO by the 15th of the following month. Late payments carry penalties.
Misclassifying employees as contractors to avoid social security obligations is a significant compliance risk.
5. Annual Leave Accrues from Day One
Employees are entitled to at least 6 days of paid annual leave per year after completing one year of service. However, employers can offer annual leave from the start of employment — and many do. What you cannot do is withhold leave accrual for the first year and then provide nothing.
The law also specifies that unused leave must either be carried over or compensated. Having a clear leave policy documented in your employee handbook protects you here.
6. Overtime Rules Have Changed
Under the 2019 amendments to the LPA, overtime pay for work beyond 8 hours per day or 48 hours per week is required at:
- Weekdays: 1.5x regular rate
- Holidays (worked voluntarily): 3x regular rate
- Holidays (forced): additional compensation requirements apply
Many companies — particularly startups — fall into the pattern of asking employees to work long hours without tracking overtime. This creates retroactive liability.
7. The Work Rules Requirement
Any employer with 10 or more employees is required by law to have written Work Rules (ข้อบังคับเกี่ยวกับการทำงาน) that cover working hours, leave, compensation, and disciplinary procedures. These must be posted prominently in the workplace and submitted to the Department of Labor.
This is not a technicality. Work Rules are the document that justifies disciplinary actions — including termination for cause. Without them, your ability to take legitimate HR actions is significantly weakened.
8. PDPA Applies to Your HR Data Too
Thailand's Personal Data Protection Act (PDPA), which came into full force in 2022, applies to employee data as well as customer data. This means you need consent to collect, store, and process employee personal information — and you need a documented lawful basis for each processing activity.
In practice, this means your employment contracts should include a PDPA consent clause, your HR systems need access controls, and you should have a retention and deletion policy for personal data.
This list is not exhaustive — Thai labor law has many more nuances, particularly around collective bargaining, foreign workers, and sector-specific regulations. But understanding these eight areas puts you ahead of most small businesses in Thailand.
If you're uncertain about your current compliance posture, the lowest-cost option is usually a quick audit — before a problem surfaces. We've seen a 30-minute conversation prevent a six-figure termination dispute. The investment is asymmetric.
Fractional HRBP and HR strategist with 10+ years experience in Thailand. Founder of VIATAL.