Supervision under ESI law requires oversight during work, not mere post-completion checking; contractors were not agents.

Under Section 2(9) of the Employees State Insurance Act, 1948, supervision means meaningful oversight while work is in progress, under the eye and gaze of the principal employer or its agent; mere post-completion checking, rejection, or acceptance is not enough. The majority also held that electrical contractors remained independent immediate employers, because the contracts and licensing requirements did not create express or implied agency in favour of the principal employer, so their employees were not covered on that basis. A concurring opinion agreed with dismissal, while the dissent favoured a purposive reading and treated the contractors as agents.

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Issues: (i) Whether the checking and acceptance of completed work by the principal employer amounted to "supervision" under Section 2(9) of the Employees State Insurance Act, 1948. (ii) Whether the electrical contractors acted as agents of the principal employer so that the employees engaged by them were covered by the Act.

Issue (i): Whether the checking and acceptance of completed work by the principal employer amounted to "supervision" under Section 2(9) of the Employees State Insurance Act, 1948.

Analysis: The majority held that supervision under Section 2(9) requires work to be under the eye and gaze of the principal employer or its agent while the work is in progress, though constant presence at every step is not necessary. Mere post-completion inspection, rejection, or acceptance of work does not by itself constitute supervision. The contractual setting and the statutory scheme preserved a clear distinction between the principal employer and the immediate employer, and the power to accept or reject completed work was treated as a contractual check rather than statutory supervision.

Conclusion: In favour of the respondents. Checking or acceptance after completion was not supervision within Section 2(9).

Issue (ii): Whether the electrical contractors acted as agents of the principal employer so that the employees engaged by them were covered by the Act.

Analysis: The majority held that the contracts and the electricity licence requirements did not create any express or implied agency in favour of the principal employer. The contractors remained independent immediate employers who carried out the work under their own contractual and licensing obligations, including direct supervision by qualified supervisors under the electricity rules. Recognising them as agents would collapse the distinction maintained by the Act between principal employer and immediate employer.

Conclusion: In favour of the respondents. No agency was created, and the employees of the contractors were not covered by the Act on that basis.

Final Conclusion: The employees engaged by the contractors were held not to fall within the statutory definition relied upon by the ESIC, and the demand for ESI contribution against the principal employer and the contractors failed.

Ratio Decidendi: For the purposes of Section 2(9) of the Employees State Insurance Act, 1948, supervision means meaningful oversight while the work is in progress, not mere post-completion checking or acceptance; and an independent contractor is not an agent of the principal employer unless the contractual and legal arrangement clearly creates that relationship.

Concurring Opinion: Ranganath Misra, C.J. concurred with the dismissal of the appeals and the view that the High Court's judgment should stand.

Dissenting Opinion: Ramaswamy, J. held that supervision should receive a purposive construction and that the contractors, as immediate employers, acted as agents of the principal employer; on that basis, the employees were covered by the Act and the appeals should have been allowed.

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