As regards ESI coverage there is no age limit and the coverage has to continue till the wage limit is not exceeded.
As regards PF Coverage, the contribution under Employees Pension Scheme is only upto the age of 58 years and thereafter the entire contribution goes to PF and is eligible for pension. So also, as they have already crossed 58 years of age, such employees can get their final withdrawal and thereafter render themselves to be "excluded employees" under the PF Act. So no coverage is needed under PF Act thereafter.