Dear Maya,
It varies from company to company, so it's not fixed, but as per law, if an employee worked for 20 days, they are entitled to 1 PL (Paid Leave). PL can be carried forward to the next year, but only 12 PL days will transfer from the current to the next year, and the remaining balance will lapse.
Regarding PL settlement, before 30-Mar-08, we deducted the PF adjustment from the PL. However, from 1-April-08 onwards, it is not entitled to PF deduction. FnF calculations are always based on the gross salary for the resigning month.
Calculation: Basic+DA/30 * No. of PL.
Note: PL is always calculated based on 30 days, not 31 or 29 days.