You have not mentioned the name of the Act under which your unit is covered i.e. Factories Act,1948 Or Shops & Commercial Establishments Act. National & Festival as well as Casual & Sick Leave Act and The Maternity Benefit Act, 1961 may also be applicable. The Shops Act & the NFH Act are the state enactments while the F. Act & The Maternity Benefit Act are the Central Acts. In all these Acts provisions for different types of leaves are laid down there. Your queries are very lenghy.You must go through these Acts for applicability of different Acts and for the extend and the nature of leaves.
21st February 2009 From India , Delhi
U seems bit confused abt number of labour laws applicable. In short I may say
1. If your office is within factory area, then it will be governed by Factories Act only.
2. Leave Rule is specific to your organisation. Only the minimum no of leave is prescribed in law.
3.Availing leave is also organisation specific. Limits are specified like no. of days and no. of occassions are put to take care of business requirements.
4.Regarding 240 days, authorised leave periods are counted for calculating 240 days.
5. Regarding CL/SL there is no statutory provision .Moreover, CL is not a leave it is a permission to absent from duty for meeting exigencies.
6. Lastly availing Leave is not a matter of right, it is subject to approval.
The leave rules are mostly derived from Govt rules( You may refer to FR/SR) in this regard.
22nd February 2009 From India , Bhubaneswar