HRA - Rent Receipts

Hi All,

I need a clarification with respect to Tax Deduction at Source for Salaries.

As an employer (responsible for deducting tax at source), do i need to collect all the 12 months rent receipts from our employee?  Or Original Rent receipt of one of the months during the FY is enough?

One of my friends is saying the employer needs to collect all the 12 months Rent receipts from the employees whoever claims HRA exemption.

Please advise.

Best Regards
Narasimha