shown to the date 1.1.90, the date of implementation. However, it is stated that the Cabinet has decided the matter finally after referring with P.S.C. to implement the rule in its meeting held on 20th October, 1993. Thereafter only rules were published. That is the reason for the provision that the employees promoted on or before 20.10.93 shall not be reverted was incorporated. Since Cabinet has decided the matter on 20th October, 1993 at the maximum that date has some nexus. Any promotion effected on the basis of the existing rules prior to the publication of the notification upto 20th October, 1993 shall not be affected by the special rules as vested rights cannot be affected. If a person is promoted before 20th October, 1993, his promotion from that date cannot be affected at all by the retrospective effect as persons promoted before 20th October, 1993 had already accrued the vested right. However, provisional promotions effected after 20th October, 1993, i.e. after the Cabinet decision will not get the above right.