Leave Without Pay Calculation - IT Industry

Hi
I am an HR with an IT company in Gurgaon. I need some expert and legal clarification on the points below:
1. We donot have a sandwich leave policy. But I want to know if an employee has no leave balance, and still takes a Friday and a Monday off, so should we consider 2 days LWOP or 4.
2. If an employee is leaving mid of a month, so final calculations should be pro-rata on the days worked and working days or days worked and the entire month days?
3. What is the general practice on calculating Leave without Pay, or as per guidelines?

If you do not have a sandwich leave policy then the leave should be considered as 2 and not 4
If an employee leaves in between the month i.e. 10th of any month the Salary calculation will be 10 by 30
General Practice of LWP is to calculate on Gross Salary
The above are based on my understanding of your query.

Dear, Please find the below reply of you queries:
1. If you do not have sandwich policy about weekly off. Then you can follow this one i.e. Your company has 5 days week. If any employee worked on Monday, Tuesday & Wednesday (3 Days) but he/she was absent/LWP (Thursday & Friday), hence he will get Saturday & Sunday as paid weekly off. Policy would be if any employee worked more than 50% (days) in particular week means will get coming weekly off.
Please tell me normally what practice you are following about the weekly off. You can id
2. If an employee is leaving in mid of month then all leaves will calculate till his last working day.
3. You need to create the policies on LWP, as I have explained in point no. 1.
Hope you all queries has been resolved.