S. RAVINDRA BHAT, J.

1. The petitioners are aggrieved by an order of the Central Administrative Tribunal (CAT) dated 27-09-2012 in OA 248/2012. The present writ petitioners were impleaded as contesting respondents in those proceedings before the CAT. The original applicants (referred to as “the applicants”) had filed the application, challenging the revision in seniority in the cadre of Upper Division Clerks (UDC) in the Central Secretariat Clerical Service (CSCS). By the impugned order, CAT accepted their contentions and allowed the application.

Facts of the case

2. The parties belong to the CSCS, and are governed by the CSCS Rules, 1962. CSCS consists of two cadres, i.e. Lower Division clerks (LDCs), and Upper Division Clerks (UDCs), and a separate cadre Unit in respect of those two grades of CSCS exists for each Central Government Ministry. The select list for UDCs in each such cadre unit is determined by the Department of Personnel & Training (“DoPT”). All LDCs who have completed eight years approved service and possess the Benchmark “Good” in their Annual Confi