Voter ID Card as Proof of Date of Birth
The voter ID card is not proof of date of birth. The basic document is the extract of the birth register or the School Leaving Certificate. The other documents are self-declared and could be self-serving. Relying on them is a serious flaw and could open the floodgate for many such outrageous claims.
Employee Declaration for Date of Birth
If the employee has no documentary proof, the declaration made by the employee at the time of their joining has to be accepted as final and binding for all purposes. There are reported cases where employees seek a change of date of birth nearing their retirement. In one organization, considering the genuineness of the document, it was agreed in one case. Within a short time, there were hundreds of requests, and it became a major botheration.