Nagesh Singh & Anr vs B.D. Virdi & Ors

The Supreme Court held that the promotions of SC/ST candidates under Rule 13 of the IES Rules, 1961, without considering the claims of general category applicants, were legally unsustainable and violated Articles 14 and 16 of the Constitution. The retrospective amendment to Rule 13 that affected the vested rights of the applicants was deemed unreasonable and arbitrary, leading to its invalidation. The Court directed a review of the promotions while ensuring that financial benefits already conferred on the promoted candidates remain protected.