R.M.Prasad, J.

1. In this writ petition, the petitioner is aggrieved by order dated 22.11.2004 (Annexure 5), whereby Devi Rajak (respondent No. 4), though being junior to him, has been authorised to work as Engineer-in-Chief (North), Water Resources Department in addition to his own duties of Superintending Engineer and Chief Engineer and by amendment, vide I.A. No. 4068 of 2005, he is also aggrieved by the order, contained in Memo No. 1688 dated 3.5.2005 (Annexure 12), whereby the newly added respondent No. 5 Abid Hussain Quraishi though being junior to him, has been authorized to work as Engineer-in-chief (Central) in addition to his own duties of Chief Engineer, Water Resources Department, Muzaffarpur, besides aggrieved by Notification No. 1401 dated 13.4.2005 (Annexure 19 to I.A. No. 4401 of 2005), posting some of the Superintending Engineers, including respondent No. 4, as Chief Engineer, Research and Training, Khagaul, Patna and respondent No. 5 as Chief Engineer, Muzaffarpur on additional charge.

2. In short, the relevant facts are that the petitioner, who is senior most and a Scheduled Tribe Candidate, was initially appointed as Junior Engineer (Civil) in Water Reso