(1) For All India Service Officers and all Groups A, B and C State Government Servants or employees, the normal tenure in a post shall be three years:
Provided that, when such employee is from the non-secretariat services, in Group C, such employee shall be transferred from the post held, on his completion of two full tenures at that office or department, to another office or Department:
Provided further that, when such employee belongs to secretariat services, such employee shall not be continued in the same post for more than three years and shall not be continued in the same Department for more than two consecutive tenures.
(2) Employees in Group D shall normally not be subjected to fixed tenure. They shall not be transferred out from the station where they are serving except on request when a clear vacancy exists at the station where posting is sought, or on mutual transfer, or when a substantiated complaint of serious nature is received against them.