S. K. GHOSH AND ANR. vs UNION OF INDIA & ORS.

The Supreme Court held that the revision of seniority among Directors of Postal Services, as per the order dated 17th January 1966, was arbitrary and violated Article 16 of the Constitution. The Court emphasized that promotions to the grade of Directors are based on selection rather than seniority, as per Rule 3 of the recruitment rules. Consequently, the petitioners' seniority, which was established based on merit, could not be altered by subsequent revisions in the time scale of Class I Service, leading to the quashing of the government's order regarding seniority.