The question of reservations in promotions for Scheduled Castes (SCs) and Scheduled Tribes (STs) in public employment has been one of the most contested and evolving areas of constitutional law in India. A series of Supreme Court judgments has shaped the legal framework governing this issue, with the latest developments continuing to refine the constitutional principles.
Constitutional Framework
Article 16(4A) of the Constitution, inserted by the Constitution (77th Amendment) Act, 1995, enables the State to provide reservations in promotions for SCs and STs if they are not adequately represented in services under the State. Article 16(4B), inserted by the 81st Amendment, allows carry-forward of unfilled vacancies reserved for SCs and STs.
M. Nagaraj v. Union of India (2006)
The Supreme Court’s five-judge Constitution Bench in M. Nagaraj v. Union of India (2006) upheld the constitutional validity of Articles 16(4A) and 16(4B) but imposed three conditions for providing reservations in promotions: the State must collect quantifiable data showing inadequacy of representation of the SC/ST community; the State must show that such reservations are required to maintain efficiency of administration; and that there is no absolute right to promotions.
Jarnail Singh v. Lachhmi Narain Gupta (2018)
In Jarnail Singh v. Lachhmi Narain Gupta (2018), a five-judge bench held that while the three conditions laid down in M. Nagaraj remain valid, the State is not required to collect quantifiable data on backwardness of SC/ST communities specifically for promotions — since the Presidential Lists under Articles 341 and 342 already identify these communities as backward.
Recent Developments
Courts continue to apply these principles in cases involving reservation in promotions. High Courts across the country have had to examine whether states have fulfilled the conditions laid down by the Supreme Court before providing promotions-based reservation. This includes examining whether adequate data on representation has been collected and whether the measure is consistent with the efficiency requirements of administration.
Significance
The jurisprudence on reservation in promotions remains an important area of constitutional law that directly affects the careers of millions of public servants across India. It reflects the ongoing effort to balance affirmative action for historically disadvantaged communities with other constitutional requirements.
Source: Supreme Court of India Judgments | Analysis: Justice Order | June 2026
