E-Verify requirements in Missouri: public contracts, public employers, and the 2026 enforcement rewrite

As of September 2026, Missouri does not require every private employer to use E-Verify. It requires public employers to enroll, and it requires any business entity that receives a state or political subdivision contract or grant over $5,000, or a state-administered tax credit, tax abatement or loan, to swear that it uses a federal work authorization program for the employees working on those services. Every employer, public or private, is prohibited from knowingly employing an unauthorized alien in Missouri, and using E-Verify gives an affirmative defense to that charge.

What changed this year is enforcement. HB 2366 and HB 2511 of 2026, signed on July 13, 2026 and effective August 28, 2026, replaced Missouri's complaint-driven license-suspension process with direct attorney general investigations and lawsuits, including damages of ten times the wages paid to unauthorized workers, and made general contractors liable for a direct subcontractor's violations when they know about them. Summaries written before August 2026 describe a process that no longer exists.

Who must use E-Verify in Missouri

"Business entity" is defined broadly in RSMo 285.525, covering anyone engaged in an activity for gain, including self-employed individuals, partnerships, corporations, contractors and subcontractors. The state's own purchasing certification form quotes the definition's exclusions for a self-employed individual with no employees and for entities using direct sellers.

The public contract affidavit in practice

Contractors submit the affidavits to each state agency or political subdivision they contract with, on an annual basis. The Missouri Office of Administration's E-Verify vendor page and its business entity certification form accept, as documentation of enrollment, either the E-Verify Employment Eligibility Verification page showing the company name and company ID, or a page of the E-Verify Memorandum of Understanding listing the company plus the MOU signature page signed by the company and DHS.

The statute also suspends the enrollment requirement for fifteen working days during or immediately after an emergency, defined to include major snow and ice storms, floods, tornadoes, severe weather, earthquakes, hazardous material incidents, radiological hazards and major mechanical failures of a public utility facility.

Although the statute ties the affidavit to "the employees working in connection with the contracted services", E-Verify's own rules require an enrolled hiring site to verify every new hire at that site. A contractor cannot enroll and then verify only the crew assigned to the public job.

The 2026 enforcement rewrite

The bill also repealed the attorney general's database of suspended businesses (285.543) and the provision treating a city or county that failed to suspend licenses as having a sanctuary policy (285.550). An employer that reports an alleged violation to the attorney general is not subject to liability under these sections.

What "knowledge" means for contractors

The federal definition the statute borrows, in 8 CFR 274a.1(l), covers actual knowledge and knowledge that may fairly be inferred from notice of facts that would lead a person with reasonable care to learn of an employee's unauthorized status, and it lists reckless and wanton disregard of another party bringing unauthorized workers into the workforce as one example. The same rule says knowledge may not be inferred from an employee's foreign appearance or accent. In practice, a contractor that ignores red flags about a subcontractor's workforce is exposed in a way it was not before, and a clause in the subcontract no longer settles the question. Keep records of what you asked subcontractors and what they told you, and cooperate promptly if the attorney general asks for site access, employment files or contracts, as the statute now requires.

What participating employers must do

1. Enroll the Missouri hiring sites in E-Verify.
2. Complete Form I-9 on the federal timeline; see Form I-9 timing in hiring.
3. Create a case for every employee hired after enrollment at those sites, by the third business day after the start date.
4. Keep the dated verification report (the case result) that RSMo 285.530.4 requires.
5. Handle mismatches under the federal process, without adverse action while a case is pending; see E-Verify tentative nonconfirmation.
6. For public contracts, file the affidavits and enrollment documentation annually with each contracting entity.

Staffing agencies and Missouri

• An agency supplying workers under a state or local government contract over $5,000 is a business entity receiving that contract and needs the affidavits and enrollment documentation.
• An agency subcontracting to a general contractor now faces a contractor that has more reason to ask hard questions, because the contractor's own liability depends on what it knows. Expect requests for proof of enrollment and compliance language in subcontracts.
• As employer of record, the agency runs the E-Verify cases for its temps; the client does not. See E-Verify for staffing agencies.
• Voluntary enrollment is worth weighing even without public contracts, because the affirmative defense now stands between the agency and a ten-times-wages damages claim.

A Missouri checklist

• Identify any state, city, county, school district or other political subdivision contract or grant over $5,000, and any state tax credit, abatement or loan.
• Enroll the relevant hiring sites in E-Verify and keep the enrollment documentation the state accepts.
• File affidavits annually with each contracting public entity.
• Verify every new hire at enrolled sites and retain the case results.
• Review subcontractor oversight under the new knowledge standard and document it.
• Retire any internal guidance that describes the pre-August 2026 complaint and license-suspension process.
• For other states, see E-Verify requirements by state.