Which information is not legally permissible to request on employment application forms?

The request for date of birth on employment application forms is not legally permissible due to concerns about age discrimination and privacy. The Age Discrimination in Employment Act (ADEA) protects individuals over 40 from discrimination based on age, and requiring applicants to disclose their date of birth could lead to potential bias in the hiring process. This information can indirectly reveal an applicant's age, which employers may consciously or unconsciously consider when making hiring decisions.

In contrast, the other types of information—such as previous employer, educational background, and address—are generally deemed acceptable and relevant for assessing a candidate's qualifications and suitability for a position. Employers often use this information to verify work experience, check qualifications, and understand an applicant's current situation or readiness for employment.