India's Shops and Establishments legislation is State-specific, so the conditions an internship must respect change with the place of work, and the agreement should reflect the State where the intern actually sits.
Maharashtra establishments fall under the Maharashtra Shops and Establishments (Regulation of Employment and Conditions of Service) Act, 2017, which caps daily and weekly working hours and mandates weekly rest. A Mumbai or Pune firm should keep intern hours comfortably within these limits, because hours that mirror a full employee's schedule undercut the training characterisation and feed an argument that the intern is really staff.
Karnataka, the natural home of the technology sector, applies the Karnataka Shops and Commercial Establishments Act, 1961. Bengaluru employers engaging interns who write code or build products should pay particular attention to the IP assignment clause, since the most valuable output of a Karnataka internship is frequently software whose ownership the firm cannot afford to leave ambiguous.
Delhi runs under the Delhi Shops and Establishments Act, 1954, and the capital's dense concentration of consultancies and startups makes the line between intern and consultant especially live. A firm that labels a worker an intern to avoid PF and ESI, while treating them as a contractor, risks the worst of both worlds if an inspector examines the substance.
Tamil Nadu establishments are governed by the Tamil Nadu Shops and Establishments Act, 1947. Chennai's manufacturing and services base means many engagements look more like apprenticeships, so where the Apprentices Act, 1961 route fits, registering the contract and paying the mandatory stipend gives cleaner protection than an informal internship letter. Across every State, the safe instinct is to match the document to what the intern genuinely does.