Site worker death - no proof of address or nominee?

Dear All,
Need help, one of my colleague site worker dead after sickness in the hospital, they have not any proof of address and nominee.
Please suggest what to do first.
Thanks

How can you not have his address ?
Surely details were taken during rectuitment and when esic and PF registration was done for him
Plus some of the coworkers would know his address

Thanks for the reply. Some of the rural and fully remote areas where tribal workers have not any identity proofs. But for the completion of the project soon they engaged the workers on daily wages.
I have already minded that how can he engaged the labours without any identity or address proofs.
Regards,
Dharmendra Prasad
9971753831