Verification of Identity Documents and Appointment Letter
Please check the name and date of birth on the photo ID (PAN Card, Voter Card, Passport, Driving License) and on her certificates (Higher Secondary onwards). Compare these with the name on the appointment letter already issued by you. If they match, advise the candidate to follow the laid-down procedure for a change of name, which starts with a notification in a national newspaper, and produce the requisite approval from the Registrar's office appointed by the state administration. Thereafter, you may provide a fresh appointment letter, mentioning the cancellation of the letter already issued in the XYZ name.
If the name is not the same, how did you issue the appointment letter to ABC when XYZ was selected for the job? You need to review and fine-tune your recruitment process. This includes accepting only resumes that have been signed by the candidate and carry the candidate's photograph fixed or pasted on it, comparing the photograph with the candidate in person and with his or her photo ID, and then allowing the individual to appear for a test or interview. Affix another copy of the photograph, attested by HR, on the interview evaluation form. You will introduce a fail-safe system if the candidate's signatures, while accepting your appointment letter, are compared with his or her signatures on the resume and certified by HR. Keep all these documents in the employee's personal file for reference.