Salary Matter - an employee who is absent before day and after a day of a holiday like Diwali

Dear Sir/Madam, I have a query in the case of an employee who is absent before day and after a day of a holiday like Diwali or any other holiday fixed by the company. The company should pay for that holiday salary or deducted it from his/her salary. if is there any law. Plz provide the details, as i am new in this subject matter.
Another query is that what is the difference between Paid Leave, Casual Leave & Holiday Leave.
Thanking you

Dear madam,
If an employee absent prifix or suffix on holiday or weekly off, in that case holiday or weekly off converted into leave if leave available otherwise unpaid days. An employee must be present one or half day before or after holiday or weekly off.
Paid Leave--------PL it is calculated on working day of an emplyees. formula one day for every working 20 days as per factory act 1948
Casual Leave--- It is a general leave, any emergency, personal work, etc
Holiday------ Paid Holiday..i.e.15 august, 26 january, 1 may is mandatory .....