Visit the nearest EPF office with his UAN number and seek help.
Forms to be filled up and documents needed:
EPF Composite Form
Joint photograph of claimants
Date of Birth certificate of children claiming pension
Copy of cancelled cheque or attested copy of first page of bank Pass Book.
Speak to Employer with whom he worked last and he will help.otherwise as such EPF commissioner office nearby to be contacted along with details as given above.
EPS Scheme certificate
11th January 2019 From India, Pune