If he is not excluded employee in pf, then you have to deduct his PF from DOJ, otherwise, whenever your company audited,liability applies from his DOJ.
At reaching the age 58, you have to stop contribution towards pension and contribute his 8.33 (employer share) in PF account.
If your employer is covered under PF, PF deduction has to be compulsorily from day one of employment. If you want to back date it and pay, you can pay as arrear PF with penalty and interest charges based number of years of service. Or you pay presenting as if addition of new employee. But employee will be the looser.