Beginning January 5, 2018, federal contractors and subcontractors with the E-Verify Federal Acquisition Regulation (FAR) requirement must enroll in and use E-Verify. New federal contractors and subcontractors with a FAR requirement must provide their Data Universal Numbering System (DUNS) during the E-Verify enrollment process. Existing E-Verify employers will be prompted to enter their DUNS number when they update their company profile.