Provident Fund, being a scheme of investment, has no age limit. However, an employee who has previously withdrawn all funds and is receiving Provident Fund Pension is not eligible for the Pension Fund. In such cases, the employer's share towards the Pension Fund (at 8.33%) will be credited to the Provident Fund alone.
Regarding ESI, as long as an employee is on the company's payroll, they will be covered regardless of age, but within the statutory rules regarding salary for out-of-coverage cases (i.e., Rs 10,000).
Regards,
Madhu.T.K