What is my Employment Security Reference Number (ES Reference Number)?
A. It is the account number you use to file your quarterly unemployment taxes (box 6 on the 5208-A form). It also is printed on the top right corner of your annual tax-rate notice and the statement of benefit charges we send you. The format of the number is: 123456 78 9. If the number begins with 600, 601 or 602 and is formatted like this: 60X 456 789, it is the Unified Business Identifier (UBI) number, not the ES reference number. If you cannot locate your ES reference number, please call your district tax office.
