Dear Sushil,
You have strong proof that your deceased member was under medical care of ESI, thus was in your employment. Hope you have not mentioned date of leaving as 30.11.2016 in ECR.
Submit PF Form 20, 5 IF (DLIS) Form 10 C (in case of deceased member who died after attaining 58 years age but before completion of 10 years of eligible service, withdrawal benefit to family/nominee/legal heir.) alongwith Original Death Certificate and Passport size phothgraphs duly attested by employer.
You can write to PF Authority that the deceased member was on authorised sick leave duly certified by ESI Medical Practitioner, thus was in continued employment and eligible for insurance fund under DLIS.
Succession Certificate in case of application by the legal heir after death of member.
Copy of blank/cancelled cheque/Passbook.
Copies of Aadhaar Card, PAN Card.
Regards,
Suresh