Short answer: Carriers usually request the state’s quarterly unemployment wage report to verify eligible employees. The name varies by state, for example TX ‘Employer’s Quarterly Report’ (C-3/C-4), CA DE-9C, NY NYS-45, FL RT-6, IL UI-3/40.
When enrolling a group, carriers often ask for the employer’s most recent state quarterly unemployment wage report to confirm who the eligible W-2 employees are. Each state names this form differently: Texas uses the Employer’s Quarterly Report (TWC C-3/C-4), California the DE-9C, New York the NYS-45, Florida the RT-6, Illinois the UI-3/40, Pennsylvania the UC-2/UC-2A, and so on. If you’re unsure, describe it to the client as the quarterly report they file with the state workforce agency listing each employee and their wages.