UNION OF INDIA vs MAHENDER SINGH .

The Supreme Court held that the Central Administrative Tribunal erred in directing the regularization of the respondents' services from their respective appointment dates, citing the precedent in State of Haryana vs. Piara Singh [(1992) 4 SCC 118]. The Court clarified that regularization must be in accordance with existing rules and not retroactively. The appeal was allowed, and the Tribunal's order was set aside, emphasizing that the respondents were not entitled to the same benefits as others due to differences in their employment circumstances.