Dear Ankita,
In continuation of the reply of our learned member Labour Law Index, I would like to bring it to your attention that all kinds of leave pertaining to a particular year are not to be carried over to the successive years. Only such a type of leave which requires accrual based on attendance as specified in the applicable establishment-oriented labour law or leave regulations has to be carried forward in case it is not availed by the employee subject to certain statutory limit. All other kinds of leave like casual leave, sick leave etc., would get lapsed if not availed by the employee at the end of the calendar year. However, unavailed portion of certain leave like sick leave has surrender value at the time of termination of employment.Therefore, up-to-date maintenance of leave account of employees then and there is a must.