A new research paper published by the Women AI Labs Research Division in Nature Machine Intelligence finds that seven out of ten commercially available AI resume screening tools penalise applicants with career gaps of six months or longer — a penalty that disproportionately affects women who took time off for caregiving.
What We Found
Our team audited 10 widely-used applicant tracking and AI screening products by submitting 2,400 synthetic resumes across three job categories: software engineering, product management, and data science. Resumes were identical in all respects except for the presence or absence of a documented career gap.
In 7 of the 10 tools, resumes with a 12-month gap received an average 34% lower compatibility score than identical resumes with no gap. In three tools the penalty exceeded 50%.
Recommendations for Employers
- Audit your AI screening tools specifically for career gap bias before deploying them at scale.
- Request demographic impact reports from vendors as a condition of purchase.
- Complement AI screening with structured human review for all candidates flagged by the system.
The full paper, methodology, and synthetic dataset are available as open access. Contact us for the preprint link.