Most E-Verify cases resolve in under five seconds. The system pings DHS and SSA, "Employment Authorized" comes back, and nobody thinks about the case again. For a company doing 10 hires a year, that's the end of the story.
But for staffing firms, healthcare networks, and retailers running seasonal volume, the exceptions stack up fast. And the federal timelines attached to them don't bend. Here's a look at three categories of E-Verify edge cases that routinely create compliance exposure, and what managing them well requires.
Edge case #1: Tentative Nonconfirmations (TNCs) response
An E-Verify TNC notice means the system couldn't confirm eligibility through standard database matching. It does not mean the employee is ineligible. But it triggers a specific sequence of required actions with hard federal deadlines, and this sequence has to be followed exactly.
What the timeline looks like:
- Employers have 10 federal working days to notify the employee and provide a Further Action Notice (FAN) explaining the mismatch.
- The employee then has 10 federal working days to decide whether to contest.
- If they contest, they have 8 federal working days to contact DHS or visit an SSA office.
During the entire window, employers cannot take any adverse action based solely on TNC status: no termination, no suspension, no pay withholding, no delayed training. If the employee declines to contest or doesn't respond within the window, the case becomes a Final Nonconfirmation, at which point termination is legally permissible.
Where it gets tricky
The most common failure in this scenario is tracking. When you're managing 30 open TNCs at once, each on its own federal timeline, a shared spreadsheet and a calendar invite are not a compliance system. Cases slip. Deadlines pass. Adverse action happens before it's legally permitted, or termination is delayed past the point where it's documented.
The other common failure is treating a TNC as a red flag rather than a process. Employees with legitimate eligibility, whose records simply don't match because of a name change, an SSN update, or a database lag, get pushed out of jobs they're legally entitled to hold. That's a liability, not a compliance win.
Edge case #2: Data entry errors that trigger TNCs
Not every E-Verify TNC notice reflects a genuine eligibility question. A significant share is caused by errors introduced during Form I-9 completion: a transposed digit, a document type entered in the wrong field, or a restricted Social Security card that wasn't flagged.
Important preventable errors:
- Restricted Social Security cards: Certain SSA-issued cards include restrictions, such as: "NOT VALID FOR EMPLOYMENT" or "VALID FOR WORK ONLY WITH DHS AUTHORIZATION." These cards are not acceptable List C documents for I-9 purposes. If one is accepted and submitted to E-Verify, it generates a TNC that didn't have to happen.
- SSN handling: E-Verify requires all employees to provide a Social Security number, even though SSNs are technically optional on Form I-9. Teams that don't catch this at intake either delay case creation or submit incomplete cases.
- Document attestation mismatches: The documents an employee can present for Form I-9 depend on their citizenship attestation in Section 1. If an employee who attests as a U.S. citizen is presented with work authorization document options that don't apply, any documentation collected from that incorrect list can't be entered into E-Verify correctly.
Most of these errors can be caugt before a case is ever submitted. The question is whether your intake process has the controls to catch them.
Edge case #3: E-Verify reverification and expiring work authorization
E-Verify compliance doesn't end at hire. Employees on temporary work authorization — EADs, TPS-based documents, certain visa categories — have documents that expire. When they do, Supplement B reverification on Form I-9 is required, and in some cases a new E-Verify case needs to be created.
What makes this complicated:
EAD category codes matter. Not all EADs are the same. The category code printed on the card determines what reverification is required, whether automatic extensions apply, and how TPS designation changes affect the employee's continued authorization. An EAD with category code C09 is different from one with C19, and treating them the same creates gaps.
TPS designation changes. When DHS extends or redesignates Temporary Protected Status for a country, employees from that country may be eligible for automatic extensions of their EADs. But the rules are specific to each designation, and the extension periods vary. Employers who aren't tracking this can let valid authorizations lapse, requiring employees to go through unnecessary re-documentation.
The reverification window. E-Verify reverification needs to happen on or before the document's expiration date. Teams that rely on reactive tracking — someone noticing an expiration has passed — routinely miss the window, creating both I-9 violations and potential gaps in employment authorization.
What proactive tracking looks like: Outreach to the employee 90 and 60 days before expiration, initiated by your I-9 and E-Verify system, with a reverification workflow that starts before the deadline.
What these cases have in common
Each of these edge cases shares the same underlying characteristic: they're manageable with the right process and essentially unmanageable at scale without one. A company doing 20 hires a year can survive on manual tracking. A company doing 200, or 2,000, cannot.
The compliance requirements themselves don't change when you use purpose-built software. What changes is how much of the process runs automatically versus how much lands on someone's to-do list. For TNCs, that means automated timeline tracking and notice routing. For data entry errors, it means document validation and restricted-card detection at intake. For reverification, it means built-in workflows to begin outreach before expiration, not after.
WorkBright's I-9 and E-Verify platform is built specifically for employers managing this kind of volume and complexity, from automatic case creation to TNC workflow management to expiration tracking across an active workforce. If your team is handling these cases manually today, see what it looks like when the process runs itself.
HR compliance is complex, but it doesn’t have to be. WorkBright’s modern software and services streamline I-9s, E-Verify, and form management, while keeping your team audit-ready and aligned with ever-changing regulations. Take the guesswork out of compliance so you can focus on what matters most—your people.
