2. The facts, in brief, as projected by the appellant/writ petitioner is that the respondent-Company initiated recruitment process for filling up of the posts of Assistant Engineer (Generation) in which the appellant and other private respondents participated and all were interviewed on 08.05.2007 and they were selected and on 12.07.2007, provisional list of selected candidates was uploaded in the official website of the respondent Company in which the appellant’s name was shown at serial No.10, however, on 10.07.2007, appointment order of 19 successful candidates i.e. the private respondents herein on the post of Assistant Engineer (Trainee) was issued and the appellant by letter dated 12.07.2007 was informed that he has been provisionally shortlisted for the post of Assistant Engineer (Trainee) and he was asked to submit caste certificate duly verified by the High Power Caste Scrutiny Committee which he submitted on 18.07.2007, thereafter appointment order was issued in favour of the appellant on 12.09.2007 appointing him on the post of Assistant Engineer (Trainee) in Mechanical Branch and he was posted in the Office of the Chief Engineer (Generation), Korba West, Korba. Thereafter, on 22.06.2009, another order was issued appointing the appellant/writ petitioner temporarily to officiate until further orders on the post of Assistant Engineer (Generation) showing his date of appointment as 24.09.2008. On 18.05.2012, provisional gradation list as on