The 42nd Constitutional Amendment Act, 1976 was passed by the Indian Parliament during the National Emergency proclaimed under Article 352 on 25 June 1975, and is the most extensive single amendment in the history of the Constitution of India. Introduced as the Constitution (Forty-second Amendment) Bill, it was drafted following the report of the Sardar Swaran Singh Committee, which the Indian National Congress under Prime Minister Indira Gandhi constituted in February 1976 to recommend constitutional changes. The Act received presidential assent on 18 December 1976, with most provisions commencing 3 January 1977. Because the Lok Sabha's term had been extended under the Emergency and a large segment of the opposition was imprisoned under the Maintenance of Internal Security Act (MISA), the legislation passed without effective parliamentary resistance, a circumstance that later earned it the label the "Mini-Constitution" for the breadth of structural change it attempted in a single instrument.
The amendment altered the Preamble by inserting the words "socialist" and "secular" into the description of the Republic and changing "unity of the Nation" to "unity and integrity of the Nation." It added a new Part IVA containing Article 51A, which codified ten Fundamental Duties of citizens, drawing on the Swaran Singh Committee's recommendation and the example of the 1936 Soviet Constitution. It inserted Article 31C in expanded form, giving primacy to all Directive Principles of State Policy over the fundamental rights in Articles 14, 19 and 31. It created Article 39A on equal justice and free legal aid, Article 43A on workers' participation in management, and Article 48A on protection of the environment. The Act also transferred five subjects—education, forests, weights and measures, protection of wild animals and birds, and administration of justice—from the State List to the Concurrent List, strengthening the Union's legislative reach.
On the architecture of state power, the Act made significant procedural and substantive changes. Article 74 was amended to make the Council of Ministers' advice explicitly binding on the President, removing earlier ambiguity. It extended the term of the Lok Sabha and State Legislative Assemblies from five to six years. It inserted Article 323A and 323B providing for administrative tribunals and tribunals for other matters, removing such disputes from the ordinary courts. Most controversially, it curtailed judicial review: Article 368 was amended by new clauses (4) and (5) declaring that no constitutional amendment could be questioned in any court and that there was no limitation on Parliament's constituent power, a direct legislative attempt to override the basic structure doctrine laid down in Kesavananda Bharati v. State of Kerala (1973). It also restricted the High Courts' power to issue writs and raised quorum requirements for declaring laws unconstitutional.
The contemporary backdrop was the confrontation between the executive and the judiciary that followed the Allahabad High Court's June 1975 judgment unseating Indira Gandhi and the Supreme Court's Kesavananda and Indira Nehru Gandhi v. Raj Narain (1975) rulings. The Act was a direct legislative response by the government in New Delhi, steered through Parliament by Law Minister H.R. Gokhale. After the Janata Party's victory in the March 1977 general election, the new government moved to reverse the most contentious provisions. The 43rd Amendment Act, 1977 and the 44th Amendment Act, 1978 restored judicial review of constitutional amendments, returned the Lok Sabha term to five years, and removed the executive's most expansive powers, though the Preamble changes, Fundamental Duties, and several Directive Principles additions were retained.
The 42nd Amendment is distinct from the ordinary process of constitutional amendment under Article 368, which it itself sought to insulate from review; the contrast with the basic structure doctrine is central, because the Supreme Court in Minerva Mills Ltd. v. Union of India (1980) struck down clauses (4) and (5) of Article 368 and the expanded Article 31C, holding that limited amending power and judicial review are themselves part of the Constitution's basic structure. It should not be confused with the 44th Amendment, which is the corrective instrument, nor with a mere ordinary statute, since it operated as constituent legislation requiring special majorities and, for federal provisions, state ratification.
Several controversies endure. The legitimacy of legislating sweeping change while opposition members were detained and civil liberties suspended is debated by constitutional historians as an instance of constitutional change without genuine deliberation. The Minerva Mills and Waman Rao v. Union of India (1981) judgments left a layered legal position: amendments to Article 31C predating Kesavananda survived, while the 42nd Amendment's later expansion did not. The retained insertion of "socialist" and "secular" continues to generate debate, including litigation challenging those words in the 2020s, with the Supreme Court in November 2024 declining to strike them from the Preamble.
For the working practitioner—the civil service aspirant, the policy researcher, the desk officer analyzing Indian governance—the 42nd Amendment is the pivotal case study in the tension between parliamentary supremacy and constitutional limits. It demonstrates how far a determined executive can reshape a constitution within formal legality, and how the judiciary's basic structure doctrine functions as the ultimate check. Understanding which provisions survived the 43rd and 44th Amendments and the Minerva Mills ruling is essential to mapping the present text of the Constitution, since the Preamble, Fundamental Duties, and environmental and legal-aid directives in force today are direct legacies of this single Emergency-era enactment.
Example
In November 2024, the Supreme Court of India dismissed petitions seeking removal of the words "socialist" and "secular"—added to the Preamble by the 42nd Amendment Act, 1976—upholding their retention.
Frequently asked questions
It altered the Preamble, added Part IVA on Fundamental Duties, expanded Directive Principles, transferred subjects to the Concurrent List, extended legislative terms, and sought to bar judicial review of amendments. The sheer breadth of structural change in one instrument led commentators to call it a virtual rewriting of the Constitution.
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