Okla. Admin. Code § 240:10-3-60
The following words and terms, when used in this Part, shall have the following meaning, unless the context clearly indicates otherwise:
"Interest" means the interest that accrues in a claimant's overpayment pursuant to 40 O.S. Section 2-613.
"Overpayment" means an unemployment benefit overpayment established pursuant to 40 O.S. Section 2-613.
Added at 20 Ok Reg 833, eff 5-12-03