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Madras High Court· 21 July 2026

What must be established to prove a causal connection between a heart attack and the work under Section 3(1) of the Employees' Compensation Act, where the deceased has no prior history of disease?

The Chief General Manager, M/s.NLC India Limited, Mine - 1A, Neyveli v. 1. Smt.M.Latha, W/O.Late Mayavan, C-6, Eluthalar St, Block 9, Kurinjipadi Taluk, Neyveli, Cuddalore District-607 801
2026:MHC:3063 · CMA.No.1556 of 2022
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Answer

There must be a causal connection between the accident and the work done in the course of employment, and the applicant must show that the work and resulting strain contributed to or aggravated the injury; where the deceased was on night shift in a mine with no material showing a pre-existing disease, stress and strain during work sufficiently establishes causation.

Headnote

Employees' Compensation Act, 1954 — s.3(1) — s.30 — Accident arising out of and in the course of employment — Death due to heart attack during night shift — Employees' Compensation Act, 1954 — s.3(1) — Accident — Meaning and test — Held: The expression "accident" under s.3(1) of the Act denotes an untoward event not expected or designed, and includes a heart attack brought about by the condition of the workman himself provided it was not designed by him; the test is whether the workman was engaged in the duties of employment at the place of performance and the immediate act was not so remote from the sphere of duties as to be foreign to them. (¶14, 16) Employees' Compensation Act, 1954 — s.3(1) — Causal connection — Stress and strain leading to heart attack — Held further: Where the deceased was on night shift duty in a mine and found unconscious after working through the night, and there is no material to show he suffered from any pre-existing disease or condition, a finding that the stress and strain of the work led to the heart attack establishes the requisite causal connection between the death and the employment. (¶10, 11, 15) Employees' Compensation Act, 1954 — s.3(1) — s.3(4) — Appellate interference — Perversity standard — Held further: A finding of the Employees' Compensation Commissioner attributing death to work-related stress and strain, where all ingredients of the causal-connection test are satisfied, does not suffer from perversity warranting interference in appeal under Section 30, and the employer remains liable to pay compensation under Section 3(4). Appeal dismissed. (¶15, 18)

In the Court's own words
Paragraph 10This Court has already noted that the deceased was engaged in the night shift and that he was on duty at Mine -1A, which is one of the mines run by the NLC. At the time of demise, the said Mr.Mayavan was aged bout 53 years. There is no material to show that the deceased was suffering from any disease or condition, which would have led him to suffer a heart attack.
Paragraph 11The Labour Commissioner, on assessment of evidence, rendered a finding that the said Mr.Mayavan was awake during night, that he was working in a mine and that therefore, the stress and strain would have resulted in the said Mr.Mayavan suffering a heart attack.
Paragraph 17In Shakuntala Chandrakant Shreshti vs. Prabhakar Maruti Garvali & Another, (2007) 11 SCC 668, while applying Section 3 of the Act, this Court observed that the tests attracting the provision of Section 3 of the Act would require the following principle to be proved: (1) There must be a causal connection between the injury and the accident and the accident and the work done in the course of employment. (2) The onus is upon the applicant to show that it was the work and the resulting strain which contributed to or aggravated the injury. (3) If the evidence brought on records establishes a greater probability which satisfies a reasonable man that the work contributed to the causing of the personal injury, it would be enough for the workman to succeed, but the same would depend upon the fact of each case.
Paragraph 17In the case in hand, this Court has already found that the accident namely heart attack had arisen out of and in the course of employment of the deceased employee.
Acts & Sections
s.3(1) Employees' Compensation Act, 1954s.3(4) Employees' Compensation Act, 1954s.30 Employees' Compensation Act, 1954

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Also decided in this judgment
Under the Employees' Compensation Act, 1954, does a heart attack suffered by a workman on night shift duty amount to an accident arising out of and in the course of employment?Can an appellate court under Section 30 of the Employees' Compensation Act interfere with the Commissioner's finding that stress and strain caused a heart attack during employment?
Plain-language answer prepared by the LexStreak Editorial Desk — verify against the judgment. Source: Madras High Court. Corrections