Any employers that elect reimbursing status after December 21, 1989, and who have or expect to have, gross payroll of more than $100,000.00 during any calendar year, are required to provide a Surety Bond, Irrevocable Letter of Credit, or other banking device as approved by the Unemployment Insurance Agency, in the amount to be determined by the UIA. If the employer reaches $100,000.00 in a later year, the employer is obligated to notify the UIA and provide the bond at that time. The bond is usually 4% of the employers estimated total annual payroll.