V.V.S.Rao, J.

1. These three writ petitions by the Government of Andhra Pradesh, and the Commissioner & Director of Municipal Administration are filed against three separate orders of the Andhra Pradesh Administrative Tribunal. The point involved being the same, this common order shall dispose of all the three writ petitions. Be it also noted that W.P.Nos.24130 and 24344 of 2011 are filed against those orders of the Tribunal which were passed on 09.9.2008 and 24.10.2008 respectively, with a delay of almost three years whereas the W.P.No.24330 of 2011 is filed against the order of the Tribunal dated 27.10.2010. It would be suffice to notice the factual background in W.P.No.24130 of 2011 because in other two matters, there is similar factual matrix.

2. The first respondent was appointed as public health worker on 12.8.1991. The appointment was made by the Commissioner of Repalle Municipality, the second respondent. From 1993, in terms of various Government Orders, he was also extended benefit of revised pay scales from time to time. He was also placed in the time scale of pay and was given periodical increments. In 2008, he was denied the annual grade increments based on