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Published on: Jul 30, 2026

ESI Registration Criteria

ESI or Employee State Insurance is a self-financing social security scheme in India. ESI was originally applicable for factories that employed 10 or more persons. Subsequently, the coverage of ESI scheme has been expanded. Currently, any factory or establishment employing 10 or more persons drawing wages of upto Rs.21,000 per month must obtain ESI registration.

Definition of Factory under ESI Act

Under ESI, a factory is defined as any premises, including the precincts thereof, where ten or more persons are employed or were employed for wages on any day of the preceding twelve months, and, in any part of which, a manufacturing process is being carried on with or without the aid of power.

If within the same premises of a factory a number of departments are situated and the departments are engaged in the work in connection with or incidental to a manufacturing process of the factory, they would all form part of the factor.

Also, the definition of factory under ESI includes a seasonal factory which works for a period not exceeding seven months in a year and is engaged during that period in any process of blending, packing or repackaging of tea or coffee or other manufacturing process notified by the Central Government.

The definition of factory under ESI does not include a mine, subject to operation of the Mines Act, 2952 or a railway running shed.

In summary, as long as the number of persons working on the factory premises is ten or more, the premises is a factory irrespective of the consideration whether they are paid wages or not. Also, all persons working in a factory need not be employed for the manufacturing process.

Definition of Establishments under ESI Act

Under the ESI Act, an establishment is an organised body of men or women or an institution, not necessarily confined to a premises or place. Hence, as long as an establishment employs 20 or more persons, it would be required to obtain ESI registration. Establishments employing less than 20 employees drawing less than Rs.21,000 per month as wages will not be required to obtain ESI registration.

Shops must also be registered under the ESI Act. The Supreme Court has held that ESI Act is a beneficial legislation and hence the word shop has to be construed in a liberal sense. Further, The Supreme Court has held that a ‘shop’ includes the premises where economic activities leading to sale or purchase are carried on. Thus, the essential ingredient for determining a shop is that services are rendered to the customer. Hence, service providers like advertisement agencies, liaison office, consultancy service providers, real estate service providers and more will be required to obtain ESI registration, if other criteria’s are fulfilled.

However, while considering the coverage of shops, educational institutions, hospitals, dispensaries, offices of Auditors and Solicitors, Chartered Accountants and private commercial hospitals are excluded.

Number of Employees Required for ESI Registration

To determine the coverage of a factory or an establishment under ESI, the following categories of persons are to be counted in addition to the persons directly employed:

  1. Persons on the roll of a factory, who are on leave with or without wages.
  2. A substitute or badli worker employed for wages.
  3. Directors who are on the pay roll of a company.
  4. Persons drawing over Rs.21000 per month as wages, but not coverable otherwise.
  5. Persons employed by, or through a contractor and working under the direct supervision of the employer.

While counting the number of employees, apprentices or trainees undergoing training and learning the trade under an approved scheme will not be counted for determining the covered of a manufacturing unit or an establishment.

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Frequently Asked Questions

Common questions about ESI Registration Criteria for Establishments in India.

According to the article, any factory employing 10 or more persons drawing wages of up to Rs.21,000 per month must obtain ESI registration. The minimum number of employees required for a factory to be covered under the ESI scheme is 10.
A factory is defined as any premises where ten or more persons are employed or were employed for wages on any day of the preceding twelve months, and a manufacturing process is being carried on. On the other hand, an establishment is an organized body of men or women or an institution, not necessarily confined to a premises or place. The key distinction is that a factory involves a manufacturing process, while an establishment does not necessarily require manufacturing.
Yes, the definition of a factory under the ESI Act includes a seasonal factory which works for a period not exceeding seven months in a year and is engaged during that period in any process of blending, packing, or repackaging of tea or coffee or other manufacturing processes notified by the Central Government.
No, not all employees working in a factory are considered for ESI registration. The article mentions that while counting the number of employees, apprentices or trainees undergoing training and learning the trade under an approved scheme will not be counted for determining the coverage of a manufacturing unit or an establishment.
Yes, shops must also be registered under the ESI Act if they employ 20 or more persons drawing wages up to Rs.21,000 per month. The Supreme Court has held that the word "shop" should be construed liberally and includes premises where economic activities leading to sale or purchase are carried on.
No, while considering the coverage of shops, educational institutions, hospitals, dispensaries, offices of Auditors and Solicitors, Chartered Accountants and private commercial hospitals are excluded from the definition of a shop under the ESI Act.
Yes, directors who are on the payroll of a company are to be counted while determining the coverage of a factory or an establishment under the ESI Act.
Yes, persons employed by or through a contractor and working under the direct supervision of the employer are to be counted while determining the coverage of a factory or an establishment under the ESI Act.
No, the definition of a factory under the ESI Act does not include a mine, subject to the operation of the Mines Act, 1952, or a railway running shed.
Yes, persons drawing over Rs.21,000 per month as wages, but not coverable otherwise, are to be counted while determining the coverage of a factory or an establishment under the ESI Act.