https://www.taxtmi.com/caselaws?id=183963 Retrospective amendments to service rules may be made under Article 309, but they cannot be arbitrary, discriminatory, or divest vested seniority rights protected by Articles 14 and 16. The SC held that officers substantively appointed to temporary cadre posts became members of the service, so their seniority had to run from the date of such membership and not from a later permanent vacancy. Purely ad hoc, officiating, or stop-gap service did not count towards seniority unless the appointment was regularised and membership of the service was acquired. The impugned seniority list and offending amendments were set aside, and fresh seniority was to be prepared on substantive membership. en-us Mon, 08 Jun 1987 00:00:00 +0530 Mon, 27 Jun 2016 12:58:58 +0530 TaxTMI RSS Generator https://www.taxtmi.com/caselaws?id=183963 Retrospective amendments to service rules may be made under Article 309, but they cannot be arbitrary, discriminatory, or divest vested seniority rights protected by Articles 14 and 16. The SC held that officers substantively appointed to temporary cadre posts became members of the service, so their seniority had to run from the date of such membership and not from a later permanent vacancy. Purely ad hoc, officiating, or stop-gap service did not count towards seniority unless the appointment was regularised and membership of the service was acquired. The impugned seniority list and offending amendments were set aside, and fresh seniority was to be prepared on substantive membership. Case-Laws Indian Laws Mon, 08 Jun 1987 00:00:00 +0530 https://www.taxtmi.com/caselaws?id=183963