Jarnail Singh v. Lachhmi Narain Gupta: creamy layer for SC/ST promotion reservation and the partial reading-down of M. Nagaraj

The judgment of 26 September 2018 in Jarnail Singh v. Lachhmi Narain Gupta is the recalibration of the constitutional architecture that M. Nagaraj v. Union of India (2006) had set down for reservation in promotion for Scheduled Castes and Scheduled Tribes. A five-judge Constitution Bench was asked to reconsider Nagaraj on two specific questions: whether the requirement of demonstrating SC/ST backwardness through quantifiable data was correctly imposed, and whether the creamy-layer principle applied to SC/ST promotion reservation. The unanimous judgment, authored by Nariman, J., answered the first question in the negative — reading down the backwardness requirement — and the second in the affirmative.

The doctrinal background

The architecture of reservation in promotion for SC/STs operates through three constitutional provisions read together. Article 16(4) permits the State to make reservation in appointments in favour of any backward class of citizens not adequately represented in the services. Article 16(4A) — inserted by the Seventy-seventh Amendment (1995) — permits the State to make reservation in matters of promotion to any class of posts in the services of the State in favour of Scheduled Castes and Scheduled Tribes. Article 16(4B) — inserted by the Eighty-first Amendment (2000) — permits the carrying forward of unfilled reserved vacancies. Article 335 requires that the claims of SC/STs be taken into consideration consistently with the maintenance of efficiency of administration.

The constitutional validity of Articles 16(4A) and 16(4B) had been upheld in M. Nagaraj v. Union of India (2006) — a five-judge Constitution Bench. The holding of Nagaraj, however, had imposed three conditions on the State's exercise of the reservation-in-promotion power: the State must demonstrate (i) the backwardness of the class; (ii) the inadequacy of representation of that class in public employment; and (iii) the impact on administrative efficiency as required by Article 335.

The Nagaraj conditions had, in the years since, produced substantial uncertainty about what data the State had to collect, what kind of inadequacy of representation had to be demonstrated, and how the administrative-efficiency consideration was to be reconciled with the reservation architecture.

The question on backwardness

The first question before the Jarnail Singh Bench was whether Nagaraj's requirement of demonstrating the backwardness of SC/STs through quantifiable data was constitutionally correct.

The Jarnail Singh Bench held that it was not — and that the Nagaraj requirement to that effect must be read down. The doctrinal frame was Indra Sawhney v. Union of India (1992) — the nine-judge Constitution Bench that had set down the architecture of reservation under Article 16. Indra Sawhney had treated Scheduled Castes and Scheduled Tribes as the most backward classes — backward by constitutional recognition, as it were, through their identification under Articles 341 and 342. The further requirement that the State demonstrate their backwardness through quantifiable data was, on the Jarnail Singh reading, inconsistent with Indra Sawhney's position.

The proposition — that SC/STs are presumed to be the most backward, in the sense in which Indra Sawhney used the term — is foundational to the Jarnail Singh analysis. The Bench was clear that this proposition flowed from a nine-judge Bench's holding; a five-judge Bench could not, by imposing a contrary data-collection requirement, displace it. To the extent that Nagaraj had imposed such a requirement, it had to be read down.

The other two Nagaraj conditions — inadequacy of representation and administrative-efficiency considerations under Article 335 — were not displaced. They remain operative constraints on the State's exercise of the reservation-in-promotion power.

The question on the creamy layer

The second question was whether the creamy-layer principle — recognised in Indra Sawhney for OBCs — applied to reservation in promotion for SC/STs.

The holding was that it does. The Jarnail Singh Bench held that the creamy-layer concept is a constitutional doctrine — not a statutory one — and that it operates as a constraint on the State's reservation-in-promotion power across the categories.

The doctrinal logic for extending creamy layer to SC/STs rests on the proposition that the constitutional purpose of reservation is to advance those who have, on the record, suffered the deprivation that the constitutional architecture was framed to address. Where members of an identified class have, in fact, advanced economically and socially to a point where they no longer suffer the deprivation, the constitutional purpose of reservation is not served by extending the benefit to them. The creamy-layer doctrine operates to exclude from the reservation benefit those who have advanced beyond a substantive threshold of deprivation; the doctrine is, in this sense, a refinement of the substantive justification for reservation itself.

The extension to SC/STs in promotion reservation, on the Jarnail Singh analysis, follows from the same doctrinal source. The Court was clear that the purpose of reservation — bringing those who have suffered deprivation into the mainstream of public employment — is best served by an architecture that, within each identified class, ensures that the reservation benefit reaches those for whom it is intended.

The relationship to Indra Sawhney

A subtle but doctrinally important feature of Jarnail Singh is its handling of the relationship between the Indra Sawhney nine-judge Bench and the Nagaraj five-judge Bench.

Indra Sawhney had, in paragraphs that the Jarnail Singh Bench treated as foundational, articulated the position that the creamy-layer concept applied to identified backward classes. The substantive application of that position to SC/STs had not, in 1992, been formally before the Bench; the engagement was with OBC reservation. But the doctrinal logic — that the constitutional purpose of reservation is served by ensuring that the benefit reaches those for whom it is intended — was articulated in terms that could be applied to SC/STs.

Nagaraj, when it had imposed the data-collection requirement, had treated SC/STs as needing to demonstrate backwardness — implicitly placing the analytic frame for SC/STs alongside the analytic frame for OBCs. That implicit treatment, the Jarnail Singh Bench held, was inconsistent with Indra Sawhney's nine-judge holding that SC/STs are constitutionally identified as the most backward classes.

The doctrinal effect was to restore the distinction — that Indra Sawhney had set — between OBCs (who must demonstrate backwardness through quantifiable data) and SC/STs (who are constitutionally identified through Articles 341 and 342). The creamy-layer principle applies across the categories; the data-collection requirement applies only to OBCs.

The application: what States must now do

The guidance for States — operating reservation in promotion regimes for SC/STs — is the following.

First, the State need not collect and demonstrate quantifiable data on the backwardness of SC/STs as a condition for providing reservation in promotion. The constitutional identification under Articles 341 and 342 supplies the frame.

Second, the State must continue to demonstrate that SC/STs are inadequately represented in the cadre or service in which reservation is being provided, in the sense that Article 16(4) and (4A) require.

Third, the State must continue to take into consideration the maintenance of efficiency of administration as Article 335 requires.

Fourth, the State must apply the creamy-layer principle to exclude those members of SC/ST communities who have advanced beyond the substantive threshold of deprivation. The criteria for identifying the creamy layer — drawing on the Mandal Commission framework and the jurisprudence on OBC creamy layer — will need to be applied to SC/STs as well.

The doctrinal arc to Davinder Singh

The Jarnail Singh line was further developed in State of Punjab v. Davinder Singh (2024) — a seven-judge Constitution Bench that addressed the question of whether sub-classification within Scheduled Castes was constitutionally permissible. The holding in Davinder Singh — that sub-classification within SC/STs is constitutionally permissible, subject to conditions — operates within the architecture that Jarnail Singh clarified.

The doctrinal arc, taken across the line of Constitution Bench holdings, runs Indra Sawhney (1992) — architecture for reservation under Article 16, including creamy layer for OBCs — to M. Nagaraj (2006) — three-pronged test for SC/ST promotion reservation — to Jarnail Singh (2018) — reading down of the backwardness requirement and extension of creamy layer to SC/STs — to Davinder Singh (2024) — permissibility of sub-classification within Scheduled Castes.

What the judgment did not decide

Two limits should be flagged.

First, Jarnail Singh did not address the criteria for identifying the creamy layer in SC/STs. The Mandal criteria for OBC creamy layer have been developed in subsequent jurisprudence; the criteria for SC/ST creamy layer will need to be articulated, either through executive guidance or through subsequent judicial engagement.

Second, the judgment did not engage with the constitutional question of whether reservation in promotion produces the cadre-balancing effects that the constitutional architecture contemplates. The operational consequences — including the consequential seniority consequences and the implications for non-reserved candidates — were not the subject of the Jarnail Singh engagement.

What practitioners take from the judgment today

For service-law and constitutional practitioners working on reservation matters, Jarnail Singh is the operative authority on three doctrinal propositions.

First, the substantive constitutional architecture for reservation in promotion for SC/STs no longer requires the State to demonstrate backwardness through quantifiable data.

Second, the creamy-layer principle applies to reservation in promotion for SC/STs. The criteria for identification, although under-developed, must be applied.

Third, the doctrinal frame Indra Sawhney settled has been restored. The Nagaraj line, to the extent it had departed from Indra Sawhney, has been brought back into doctrinal alignment.

For litigators challenging or defending reservation policies, the Jarnail Singh frame is the analytic starting point. Subsequent jurisprudence — including Davinder Singh — must be read against the Jarnail Singh recalibration.

Related editorial pieces

• Indra Sawhney v. Union of India: the reservation architecture and the 50 per cent ceiling
• M. Nagaraj v. Union of India: the three-pronged test for SC/ST promotion reservation