Career
The number can wait
An SSN on job applications is not what the hiring rules ask for. What USCIS, the FTC, the EEOC and Canada's SIN rules say about when the number is actually due.
Dana James · October 10, 2026 · 2 min read
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The federal form that collects your Social Security number at hire cannot be filled in before you say yes. The USCIS Form I-9 instructions say an employee “cannot complete the form before acceptance of an offer of employment.” The FTC’s guidance says an application is not the place for the number either.
When the number is actually due
Section 1 is due “no later than the first day of employment,” and even then the SSN field is voluntary unless the employer uses E-Verify, per the same USCIS instructions. The employer checks your identity documents within three business days of day one, so a photo ID request that week is normal. An SSN on job applications is a different matter.
What belongs before an offer
The FTC’s background check guidance says: “Don’t put your Social Security number or banking information on an application or resume.” A background check needs notice “in a standalone document” and your written permission, the same guidance says. The EEOC says pre-employment requests should, as a general rule, be limited to information “essential for determining if a person is qualified for the job,” and puts a photograph after an accepted offer. Maine wrote it into law: since January 1, 2020, employers there may not request the number on an application, except for substance abuse testing or a pre-employment background check. According to the FTC’s July 2025 consumer alert, “Real employers won’t ask for that kind of information before they’ve actually interviewed and hired you.”
Canada draws the same line
“You do not have to provide your SIN to fill out a job application,” the Government of Canada says. Its SIN Code of Practice tells employers not to ask on an application or in an interview, and to request the number no more than 3 days after employment begins.
When a form asks early
Leave the field blank. If the form will not submit, ask the employer when and why the number is needed. A clear answer usually names the I-9, a background check you consented to in writing, or required testing. Give it when that paperwork arrives. CoBlack’s profile never asks for it. CoBlack automates the application. What you share, and when, stays your decision.
Most paperwork that needs your number comes after the offer. The rest comes with a consent form to sign. Until then, the number is yours to keep.
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