Can I Ask Volunteers for Date of Birth for Background Check?
If your organization intends to complete background checks on all volunteers for a given position in the organization, it is acceptable to request date of birth for the purpose of a background screening.
Do be sure that you ask for the information on a separate ‘tear-off’ part of the application, and make it clear that the information will be disposed of as soon as it is used for the background check. It cannot become part of any permanent file.