Why should name, address,date of birth and nationality is to be mentioned in a resume?

The more the employer can know about you in the resume, the better chance you have of getting the job.

Think about it, Resume A has very little information about the person applying for the job.

Resume B contains all the above mentioned information, and good details about the applicant, but without being too long or cluttered.

As the employer, which one would you be more likely to choose?

Age and nationality are irrelevant to job performance and not only that, give the prospective employer the potential to discriminate against an applicant. This is an awful answer!

Age and nationality are irrelevant to job performance and not only that, give the prospective employer the potential to discriminate against an applicant.

Think about it: it's illegal to even ask an applicant his nationality (and probably his age) on a job interview. This is an awful answer!

You put your name, number, and mailing address for them to contact you when needed.

I never, I mean never, put my race or date of birth on a resume. I agree what the second poster said. If an employer is interest they won't get in touch with you for an interview.