Can subcontractors choose to verify existing workers not assigned to the contract?

Yes. During the E-Verify enrollment process, the subcontractor has the same verification options as the prime contractor with a federal contract that contains the FAR E-Verify clause. Prime and subcontractors can choose to verify:

• All new hires and all existing non-exempt employees assigned to a federal contract, or 
• Their entire non-exempt workforce (all new hires and all existing employees throughout the entire company).