Dear Ms.Aishwarya,
In continuation of the discussion, I would like to add further as follows:
Leave is a welfare benefit extended to employees under the establishment -specific labor legislations. The types and the number of such leave vary according to the type of the establishment. For instance, the workers of a factory under the Factories Act,1948 are entitled to only one type of statutory leave called Annual Leave with Wages. No statutory provisions for other kinds of leave like casual leave, sick leave etc., because of shift working pattern and 7th day compulsory off following 6 days work. Under the Shops and Establishments Acts, the employees are entitled to 3 kinds of leave viz., Casual Leave, Sick Leave and Privilege Leave. However, there are factory managements granting C.L to their factory workers also either as per the Standing Orders or under collective bargaining agreements. Therefore, what a statue prescribes is only the minimum and it is for the employers to decide suo motu or under the process of collective bargaining the grant of any extra leave or in excess of the statutory minimum of the existing leave.
Coming to the aspect of availment of leave ie., the types of various leave to be combined at a stretch, pro rata sanction to employees of certain status like probationars, FTC employees, facility of encashment over and above the statutory provisions etc., are matters to be included in the Leave Policy of the individual organization.