Manjula Chellur, C.J.

1. W.A. Nos. 407 and 475 of 2013 are filed by third parties to the Writ Petition with leave of the Court. W.A.No.531 of 2013 is filed by the second respondent - Kerala State Road Transport Corporation (KSRTC) challenging the judgment of the learned Single Judge in W.P(C).No.22046 of 2010. The party respondents are not before us. The controversy is with regard to fixation of seniority. The writ petitioners, challenging Exhibit P6 and relevant orders issued by the Corporation, approached the learned Single Judge seeking rectification of the anomaly in the seniority position in Exhibit P1 draft gradation list.

2. It is not in dispute that the writ petitioners, who are party respondents herein, were also included in the rank list of reserve conductors way back in 1992 published by the Kerala Public Service Commission (PSC) on 18.5.1992. It is also not in dispute that the writ petitioners were later appointed as empanelled conductors on 27.4.2000 and thereafter their services came to be regularised in the year 2007 by the Government of Kerala on the recommendation of the Corporation. In the year 2009, according to the writ petitioners, they realised that