https://www.scconline.com/blog/post/2023/02/13/esi-act-social-welfare-legislation-factories-and-establishments-liable-to-pay-esi-contributions-irrespective-of-number-of-employees-engaged-at-a-time-supreme-court-legal-news-legal-research-updates/
ESI Act a social welfare legislation; Factories and establishments liable to pay ESI Contributions irrespective of the number of employees engaged at a time: Supreme Court