Joseph Shine v. Union of India (2018) is the landmark judgment of a five-judge Constitution Bench of the Supreme Court of India that declared Section 497 of the Indian Penal Code, 1860, unconstitutional and decriminalised adultery. The petition was a writ under Article 32 of the Constitution, filed in 2017 as a public interest litigation by Joseph Shine, a non-resident Keralite. The impugned provision criminalised a man who had sexual intercourse with the wife of another man "without the consent or connivance of that man," punishing the male with imprisonment up to five years, a fine, or both. The procedural twin to the substantive offence was Section 198(2) of the Code of Criminal Procedure, 1973, which restricted the power to prosecute to the aggrieved husband alone. Both provisions were challenged as violating Articles 14, 15 and 21 of the Constitution. The Bench comprised Chief Justice Dipak Misra and Justices R.F. Nariman, A.M. Khanwilkar, D.Y. Chandrachud and Indu Malhotra, who delivered four concurring opinions.
The Court's reasoning proceeded along several constitutional axes. First, the judges held that Section 497 violated Article 14 (equality before law) because its classification was arbitrary: it treated the woman as incapable of being either a perpetrator or an abettor, conferring on her a status of legal infancy. Second, the provision offended Article 15(1)'s prohibition on discrimination on the ground of sex, because it punished only the man and proceeded on the premise that a woman is the property of her husband. The phrase requiring "consent or connivance" of the husband revealed that the wrong contemplated was an injury to the husband's proprietary interest, not the breach of a marital relationship. Third, the Court located the most powerful objection in Article 21, holding that the provision denied women dignity, autonomy and the right to sexual self-determination, reading these into the right to life and personal liberty following the privacy reasoning of K.S. Puttaswamy (2017).
The Court was careful to delineate what it was and was not deciding. It clarified that adultery remains a valid ground for civil remedy, specifically for divorce under personal and matrimonial laws, and that the judgment did not legalise adultery as a moral matter but removed it from the domain of criminal sanction. Justice Chandrachud's opinion notably overruled the earlier precedents that had upheld Section 497—Yusuf Abdul Aziz v. State of Bombay (1954), Sowmithri Vishnu v. Union of India (1985), V. Revathi v. Union of India (1988) and W. Kalyani v. State (2012). The Bench reasoned that criminalising a private consensual act between adults intrudes into an extraordinarily private sphere and that the State's coercive power could not be deployed to enforce fidelity within a marriage.
The judgment was pronounced on 27 September 2018, the same fortnight in which the Supreme Court delivered other rights-expanding rulings, including Navtej Singh Johar v. Union of India (reading down Section 377 on consensual same-sex relations) and the Sabarimala temple entry case. The Union of India, represented through the Ministry of Home Affairs, had defended the provision, arguing that decriminalisation would weaken the institution of marriage; the Court rejected this, observing that criminal law is an inappropriate instrument for preserving the sanctity of marriage. The decision attracted commentary across legal academia and the press in New Delhi, and was cited in subsequent Indian and comparative jurisprudence on gender equality and constitutional morality.
Joseph Shine must be distinguished from adjacent doctrines and cases with which UPSC aspirants frequently confuse it. It is conceptually downstream of K.S. Puttaswamy v. Union of India (2017), which recognised the fundamental right to privacy and supplied the autonomy framework Joseph Shine applied. It is distinct from Shayara Bano v. Union of India (2017), which struck down instant triple talaq, and from the Vishaka guidelines on workplace harassment. Whereas Navtej Johar concerned the criminalisation of a category of persons by sexual orientation, Joseph Shine concerned a gendered classification within heterosexual marriage. Importantly, the case decriminalised adultery but did not, unlike a divorce-law ruling, alter the substantive matrimonial consequences of the conduct.
A live controversy followed in 2023, when the armed forces sought a clarification that the judgment should not bar disciplinary proceedings against personnel for "stealing the affections" of a fellow officer's spouse. In a clarificatory order, the Supreme Court held that the 2018 decision did not interfere with the operation of the Army Act, the Navy Act and the Air Force Act, under which such conduct can attract disciplinary action as "unbecoming conduct" or breach of service discipline. This reservation illustrates that decriminalisation under general penal law does not extinguish parallel regulatory or service-law liabilities. Debate continues over whether a gender-neutral adultery offence could be reintroduced; the 2018 reasoning, resting partly on autonomy, suggests any such revival would face serious constitutional scrutiny.
For the working practitioner, civil-services aspirant or policy researcher, Joseph Shine is a touchstone in three respects. It exemplifies the post-Puttaswamy expansion of Article 21 to encompass dignity and decisional autonomy; it demonstrates the doctrine of constitutional morality prevailing over public or popular morality; and it shows the Court dismantling colonial-era statutes premised on patriarchal notions of women as property. In the UPSC General Studies framework it spans GS Paper 1 (role of women, social empowerment) and GS Paper 2 (judiciary, fundamental rights, landmark judgments). It remains a frequently cited authority in essay and ethics answers on gender justice, individual liberty and the limits of the criminal law.
Example
In Joseph Shine v. Union of India, the Supreme Court of India on 27 September 2018, through a Constitution Bench led by CJI Dipak Misra, struck down Section 497 IPC and decriminalised adultery.
Frequently asked questions
The judgment struck down Section 497 of the Indian Penal Code, which criminalised adultery, and Section 198(2) of the Code of Criminal Procedure, which allowed only the aggrieved husband to prosecute. The Court held both unconstitutional under Articles 14, 15 and 21.
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