RULE 10 OF OLR,1966

10.  Save in the case of leave preparatory to retirement, leave not due may be granted to a permanent Government servant for a period not exceeding 360 days during his entire service :

     Provided that this leave may be granted on grounds other than on medical certificate up to 90 days at a time and 180 days in all. Leave not due shall be debited against the half-pay leave the officer may earn subsequently on return to duty.

Note 1. Leave not due should be granted only if the authority empowered to sanction leave is satisfied that there is a reasonable prospect of the Government servant returning to duty on the expiry of the leave and it should be limited to the half-pay leave he is likely to earn thereafter.

Note 2. Where a Government servant who has been granted leave not due under this clause applies for permission to retire voluntarily, the leave not due shall, if the permission is granted, be cancelled.