Rule 21 — CCS

21. Counting of periods spent on leave.- All leave during service for which leave salary is payable and all extraordinary leave granted on medical certificate shall count as qualifying service:

Provided that in the case of extraordinary leave other than extraordinary leave granted on medical certificate, the appointing authority may, at the time of granting such leave, allow the period of that leave to count as qualifying service if such leave is granted to a Government servant,-

(i) due to his inability to join or re-join duty on account of civil commotion; or

(ii) for prosecuting higher scientific and technical studies.

Explanation.- In the case of extraordinary leave other than extraordinary leave granted on medical certificate and extraordinary leave allowed to be counted as qualifying service under proviso to this rule, at the time of grant of such leave, a definite entry shall be made in the service book of the Government servant to the effect that the period of extraordinary leave shall not be treated as qualifying service and such an entry in the service book, if not made at the time of grant of extraordinary leave, can be made subsequently but not later than six months before the date of retirement of the Government servant on superannuation and if no such entry is made in the service book, the period of extraordinary leave shall be treated as qualifying service.