Dear...
First of all company is not liable to contribute toward P.F if employee basic salary more than 6500p.m. If your company wants to give the P.F benefit to the employee. So, there is no problem. company can give the benefit to the employee.
But ensure one thing employee date of joining should be contribution date of the P.F. In your record, his date of joining is anything. But when you start the P.F contribution, employee joining date should be the contribution date.
i.e Date of Joining 01-04-2010
Date of P.F contribution 01-04-2011, Mention the date of joining in P.F return is 01.04.2011.
So, there is no problem.... go ahead.
Regards,
Atul Katoch