S.Sumnyan & Ors vs Limi Niri & Ors

The Supreme Court held that the seniority of Assistant Engineers in the Arunachal Pradesh Public Works Department must be determined based on the date of regularization rather than the ad-hoc service period. The Court affirmed the High Court's decision to correct the seniority list by recognizing the appointment date of the respondent No. 1 as 02.05.1989 and excluding the ad-hoc service of the appellants from seniority calculations. The ruling emphasized adherence to the relevant service rules and the importance of regularization dates in determining seniority.