Key points
- Medical questions go to a medical board, then the appellate medical board (ESSA s.33).
- Reviews are possible for fresh evidence or substantial unforeseen aggravation (s.34).
- Other disputes go to the Social Security Appellate Board within three years (ss.84, 86).
- Civil courts cannot decide these questions directly (s.84(4), (5)).
- High Court appeals are limited to substantial questions of law, within 60 days (s.91).
PERKESO has written to say your accident was not an employment injury, or the medical board assessed your loss of earning capacity at a figure that seems far too low. You can challenge the decision, but you need to know which body decides which question. Using the wrong route wastes time.
Two different kinds of decision
Under the Employees' Social Security Act 1969 (ESSA):
- Medical questions ("invalidity" and "disablement" questions, such as whether an injury caused permanent disablement and the percentage of loss of earning capacity) are decided by a medical board (s.32).
- Other questions and disputes, such as whether you are an employee under the Act, whether the accident arose out of your employment, your wage rate, or your right to and the amount of a benefit, are decided by the Social Security Appellate Board (s.84(1)).
The civil courts have no jurisdiction to decide these questions directly (s.84(4), (5)). You must use the statutory route.
Track 1: challenging a medical board decision
If you or PERKESO are not satisfied with a medical board's decision, either may appeal to the appellate medical board in the prescribed manner and within the prescribed time (s.33(2)). Check the time limit stated in your decision letter and act quickly.
A decision may also be reviewed:
- if fresh evidence shows the decision was based on non-disclosure or misrepresentation of a material fact (s.34(1)); or
- if there has been a substantial and unforeseen aggravation of the results of the injury since the assessment (s.34(2)). Except with the leave of the appellate medical board, such a review cannot be sought less than three years after the assessment, or six months for a provisional assessment (s.34(3)).
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Track 2: the Social Security Appellate Board
The Appellate Board consists of a chairman, who must have been a judicial and legal officer or advocate and solicitor for ten years, and two assessors representing employers and employees (s.83). It has the powers of a Sessions Court Judge to summon witnesses and order documents (s.87).
Proceedings are started by application, which must be made within three years from the date the cause of action arose (s.86(2)). For benefit claims, the cause of action does not arise unless the benefit was claimed under the regulations within 12 months after it became due, or a further period the Board allows (s.86(3)(a)). If a medical question arises that has not been decided, the Board directs PERKESO to obtain a medical board decision first (s.84(3)).
Going to the High Court
The Board may refer a question of law to the High Court (s.90). Otherwise, an appeal from an appellate board lies to the High Court only if it involves a substantial question of law, and must be brought within 60 days of the order (s.91). Disagreement on facts or medical opinion is generally not enough.
What should I do first?
- Read the decision letter to identify which body decided and what time limit applies.
- Get a copy of the medical board report and your full medical records.
- Obtain a supporting medical report from your treating doctor, addressing the specific issue.
- Gather evidence on the employment link: employer's report, shift records, witnesses.
- File the appeal or application within time.
Example
A factory worker's hand injury is assessed at a low percentage. Six months later, his fingers stiffen further and he cannot return to his job. His lawyer advises that the original assessment can be appealed to the appellate medical board within the prescribed time, and that the later deterioration may also justify a review for aggravation with the board's leave.
Common mistakes
- Writing letters of complaint instead of filing a formal appeal.
- Taking a medical dispute to the Appellate Board instead of the appellate medical board, or vice versa.
- Missing the time limit stated in the decision.
- Going to the High Court on a factual disagreement.
When to speak to a lawyer
Speak to a lawyer if PERKESO has rejected your claim or your assessment seems wrong, especially if your earning capacity is seriously affected. See our employment page; you can also contact us.
Frequently asked questions
Can I be represented at the Appellate Board?
The Act provides for appearance by legal practitioners and others (s.88). Ask about representation when you file.
I am self-employed. Is the route the same?
No. Under the Self-Employment Social Security Act 2017, disputes go to the Social Security Tribunal and medical questions to a medical assessor and Appellate Medical Board.
Does appealing stop the benefits I already receive?
Not necessarily. Where PERKESO appeals against a Board order, the Board may withhold payment pending the appeal (s.92). Take advice on your situation.
Sources & fact check
Legal points in this article were checked against the primary sources below. The law can change; this is general information, not legal advice.
- Employees' Social Security Act 1969 (Act 4), AGC Laws of Malaysia
- Social Security Organisation (PERKESO / SOCSO), official portal
- Self-Employment Social Security Act 2017 (Act 789), AGC Laws of Malaysia
Fact-checked on 18 Oct 2026
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