🇹🇭 Thailand Context — For International Readers
Thailand's Social Security Office (SSO) manages retirement benefits for over 20 million insured workers. Section 33 covers employees; Section 39 covers self-employed formerly employed workers. After contributing for at least 180 months (15 years), workers receive a monthly pension for life. The government has been considering replacing the pension calculation method with the CARE formula, which this article analyzes.
🏛️ Background: Case 3307/2567 Meets the CARE Debate
In recent years, Thailand's government has been evaluating a shift in how retirement pensions are calculated for Social Security contributors. The proposed method, known as CARE (Career Average Revalued Earnings), would replace the existing system of using an average of the final 60 months of wages with a lifetime career earnings average.
While CARE is used in some countries, a critical legal question has emerged in Thailand's context: Could changing the pension calculation formula infringe on the legally established rights of existing contributors?
This question gained serious traction after legal analysts began examining Supreme Court Ruling 3307/2567 alongside the Social Security Act B.E. 2533 (1990).
180
Months minimum
to qualify for pension
20%
Starting pension rate
under current law
60M
Months used as
calculation base today
📜 Pension Rights Under Thailand's Social Security Law
Under the Social Security Act B.E. 2533, Section 33 insured persons who have contributed for at least 180 months (15 years) and meet the age requirements are entitled to a retirement pension for life. The law sets the starting rate at 20% of the average wage over the final 60 months.
"These rights do not depend on the discretion of government agencies — they arise automatically from the act of contributing to the fund as required by law."
— Foundational principle of Thailand's Social Security system
This principle reflects the core promise of any contributory social insurance system: once you've paid in for long enough, you've earned the right to receive benefits as defined when you contributed.
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⚖️ Key Legal Principle from Supreme Court Ruling 3307/2567
In Supreme Court Case 3307/2567, the court established a critical principle regarding insured persons' rights:
⚖️ Core Holding — Case 3307/2567
Legal Principle
Once an insured person has fulfilled all legal conditions, their right to receive benefits is established by law — not by agency discretion.
Government Limit
Government agencies cannot issue rules, regulations, or interpretations that reduce those established rights.
Subordinate regulations MUST NOT contradict the parent statute.
Rules / Regulations / Agency practice → CANNOT reduce rights guaranteed by the Act.
📌 Key implication: If a new pension formula causes insured persons to receive less money than the principles originally established by law, that change may constitute an unlawful reduction of legally vested rights — directly contradicting this Supreme Court ruling.
This legal analysis was confirmed by followers of the community, including this message shared from a financial education page:
Message from Moneysetup Facebook community confirming the legal relevance of Case 3307/2567 to the CARE formula debate
🔄 CARE vs Current System: What's the Difference?
⚖️ Pension Formula Comparison
CARE Formula
Averages wages over the entire contributing career — lower early-career wages drag down the calculation base, resulting in a smaller pension for most workers.
Current System (Last 60M)
Uses the average of the final 60 months of wages — typically reflects peak earning years, resulting in a higher calculation base.
#B60M Proposal
Uses the highest 60 months of earnings across a career — the fairest reflection of a worker's true productive contribution.
For workers whose wages grew over time — the vast majority — the CARE formula would lower the average wage base, meaning even with the same 20% rate, the actual pension amount would be significantly reduced.
💡 The B60M Alternative: A Fairer Path Forward
🎯 What is the #B60M Formula?
Definition: B60M = "Best 60 Months" — pension calculated from the highest-earning 60 months across an entire career
vs Current System: Not just the final 60 months — selects the best 60 months from anywhere in the contribution record
vs CARE: Not a lifetime average — avoids penalizing workers for their lower early-career wages
Outcome: Reflects true worker productivity, eliminates early-career penalty, incentivizes longer participation in the SSO system
While the 20% rate remains unchanged, CARE's lower calculation base means workers receive measurably less in actual pension payments. The impact is heaviest on workers with steady career progression — the backbone of Thailand's workforce.
Dr. Boon Arayapon's policy proposal uses the best 60 months of contributions to set the pension base — balancing fund sustainability with fairness to workers who contributed faithfully for 15+ years and deserve benefits that reflect their peak working years.
🤔 Two Sides of the Debate
💬 The Ongoing Legal Debate
CARE Supporters Argue
The 20% pension rate stays the same — only the wage base changes. Therefore it doesn't violate the letter of the law.
CARE Critics Argue
If the change to the base results in lower actual pension payments, then workers' legally established rights have been effectively reduced — contradicting Case 3307/2567.
❓ Key Questions Answered
What is the CARE pension formula in Thailand?
CARE stands for Career Average Revalued Earnings — a pension calculation method that would average an insured person's wages across their entire working career, replacing Thailand's current system of using the last 60 months of wages as the calculation base.
What did Supreme Court Ruling 3307/2567 decide about pensions?
The Supreme Court established that once an insured person has fulfilled all legal conditions (such as contributing for 180 months), their right to receive benefits is established by law. Government agencies cannot then issue regulations, rules, or practices that reduce those vested rights. This principle — that subordinate regulations cannot contradict the parent statute — is directly relevant to the CARE formula debate.
Does the CARE formula reduce pension payments?
In most cases, yes. Since CARE averages income across an entire career — including the lower wages earned during early career years — the calculation base is typically lower than the current last-60-months system. For workers with steady career growth, the reduction can be significant even though the 20% rate remains unchanged.
What is the B60M formula and how is it different?
B60M (Best 60 Months) is a policy proposal by Dr. Boon Arayapon that calculates pension from the highest-earning 60 months across a worker's entire career. Unlike the current system (last 60 months), B60M rewards workers regardless of when their peak earnings occurred. Unlike CARE (lifetime average), it doesn't penalize workers for low early-career wages.
Can insured workers legally challenge the CARE formula?
According to the legal reasoning based on Case 3307/2567, if the CARE formula reduces legally established pension rights, insured persons may have grounds to petition the Administrative Court to annul regulations that conflict with the parent Social Security Act. Legal expert consultation is recommended before taking action.
Supreme Court Ruling 3307/2567 has confirmed that insured workers' pension rights are protected by law. Before the CARE formula takes effect, society must scrutinize whether the new formula is both fair and legally permissible.
#StopCARE is not opposition to reform — it is a stand that reform must not erase rights built over decades of contributions.
📣 Bottom Line: Rights Earned Over Decades Must Be Protected
Supreme Court Ruling 3307/2567 makes clear that legally vested rights cannot be reduced by government decree. The critical question isn't just whether the CARE formula keeps the fund solvent — it's whether any new formula preserves the rights of workers who contributed faithfully for 15+ years. That's the core principle behind #B60M.
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