Parties and roles: State of Punjab & Ors. is the appellant/applicant who initiated or carried the matter to the Supreme Court. Davinder Singh & Ors. is the respondent opposing the relief or defending the challenged action, decision, law or proceeding. The labels “plaintiff” and “defendant” are generally not used here because this is an appellate, special or Supreme Court proceeding. Scheduled Castes are constitutionally listed as a class for protection, but evidence suggested benefits of reservation were not reaching all communities equally. Punjab attempted to prioritise especially disadvantaged groups within the Scheduled Caste quota. Opponents argued any internal division altered the Presidential list and fractured a constitutionally recognised class. The case required the Court to distinguish changing membership of the list—which States cannot do—from distributing reservation benefits more effectively among those already on it. Procedural setting: 1975 onward: Punjab reserved a share of Scheduled Caste vacancies for Balmikis and Mazhabi Sikhs. | 2004: E.V. Chinnaiah held States could not sub-classify Presidential-list Scheduled Castes. | 2010-2020: Punjab dispute generated a larger-bench reference. | Feb 2024: Seven judges heard the case. | 01 Aug 2024: Sub-classification was upheld 6:1. The central problem before the Court was may States sub-classify Scheduled Castes for a more equitable distribution of reservation benefits? Does such classification alter the Presidential list under Article 341? Should E.V. Chinnaiah be overruled? The controversy was considered in the framework of Punjab Scheduled Castes and Backward Classes (Reservation in Services) Act, 2006 and related State measures, together with Constitution arts.14, 15(4), 16(4), 16(4A), 341 and 342. The wider importance of the case lies in substantive equality; sub-classification; affirmative action; reasonable classification; evidence-based reservation; judicial review.

States and beneficiary groups argued substantive equality permits evidence-based sub-classification so the most deprived are not crowded out. Opponents argued Article 341 creates one indivisible class and only Parliament may alter it; internal quotas risk political fragmentation and stereotyping. Competing positions in context: State of Punjab & Ors.'s position: as the appellant/applicant, State of Punjab & Ors. sought the relief indicated by the questions of law and challenged the opposing action or interpretation. The claim was that the Court should apply the governing provisions consistently with Substantive equality; sub-classification; affirmative action; reasonable classification; evidence-based reservation; judicial review. Davinder Singh & Ors.'s position: as respondent, Davinder Singh & Ors. resisted that relief, defended the impugned measure or decision, or proposed a narrower interpretation of the Court's power and the applicable law. The Court therefore had to test these submissions against Punjab Scheduled Castes and Backward Classes (Reservation in Services) Act, 2006 and related State measures and Constitution arts.14, 15(4), 16(4), 16(4A), 341 and 342, the record of the proceedings and binding precedent. This summary states the principal controversy in accessible language; the official judgment remains authoritative for counsel-specific submissions and paragraph references.

By 6:1, the Court held that States may create reasonable, evidence-based sub-classifications within Scheduled Castes to secure substantive equality, without adding to or deleting from the Article 341 list. The policy must rest on quantifiable material showing inadequate representation or relative backwardness and remains reviewable. E.V. Chinnaiah was overruled. Justice Bela Trivedi dissented. Effect of the decision: the ruling explains or applies Substantive equality; sub-classification; affirmative action; reasonable classification; evidence-based reservation; judicial review and binds the parties to the operative directions made in Civil Appeal No. 2317/2011 and connected matters. It also guides lower courts and public authorities on materially similar questions under Punjab Scheduled Castes and Backward Classes (Reservation in Services) Act, 2006 and related State measures. Scope and caution: only the ratio decidendi and operative directions of the signed judgment are binding; summaries should not be treated as substitutes for the judgment, separate opinions, later review orders or subsequent precedent.

Punjab Scheduled Castes and Backward Classes (Reservation in Services) Act, 2006 and related State measures

Constitution arts.14, 15(4), 16(4), 16(4A), 341 and 342

Substantive equality; sub-classification; affirmative action; reasonable classification; evidence-based reservation; judicial review