E-Verify Requirements in Colorado: 2026 Employer Guide

Colorado requires all public employers and state contractors to use E-Verify. Private employers are not subject to a state mandate but may participate voluntarily.

Mandatory — Public Employers & Contractors

Researched by the I9AuditReady Research Team

Last Updated: April 2026

Colorado E-Verify at a Glance

Requirement Level: Mandatory — Public Employers & Contractors
Applies To: State agencies and political subdivisions; contractors with state contracts
Employee Threshold: All employers
Key Statute: Colo. Rev. Stat. § 8-17.5-101 et seq.
Effective Date: January 1, 2007

Who Must Use E-Verify in Colorado

Colorado requires E-Verify for public employers and government contractors.

Colorado requires all public employers and state contractors to use E-Verify. Private employers are not subject to a state mandate but may participate voluntarily.

Key Facts: E-Verify in Colorado

Colorado has required state agencies and public contractors to use E-Verify since January 1, 2007 under Colo. Rev. Stat. § 8-17.5-101.
Colorado public contractors must include an E-Verify certification clause in all state contracts or face contract termination.
Colorado was among the early states mandating E-Verify for the public sector, serving as a model for later state legislation.

Penalties for Non-Compliance in Colorado

Contractors failing to certify E-Verify use may be terminated from state contracts and barred from future state contracts.

Note: Federal I-9 penalties apply in addition to any state E-Verify penalties. Consulting employment counsel is advisable before responding to any state or federal enforcement action.

Exceptions and Exemptions

Private employers not contracting with state government

Colorado E-Verify: Frequently Asked Questions

Does Colorado require E-Verify for private employers?

No. Colorado's E-Verify requirement applies only to state agencies, political subdivisions, and contractors doing business with the state under Colo. Rev. Stat. § 8-17.5-101. Private employers not contracting with government may participate voluntarily.

What do Colorado government contractors need to do?

All Colorado state contractors must certify that they use E-Verify to verify the eligibility of all new employees assigned to the contract. This certification must be included in contract documents. Failure to comply can result in contract termination.

When did Colorado's E-Verify law take effect?

Colorado's public employer E-Verify requirement took effect January 1, 2007, making it one of the earlier state E-Verify laws in the country.

Do Colorado private employers still need I-9s?

Yes. All Colorado employers — private and public — must complete Form I-9 for every new hire under federal law. The federal I-9 requirement is separate from and independent of any state E-Verify mandate.

Nearby State Requirements

Utah(Mandatory)Wyoming(Voluntary)Nebraska(Public only)Kansas(Public only)

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