If they actually overpaid you, yes you must pay them back. Please download the form, complete each field and print.Include the form with your refund so we can properly apply the refund and record the receipt. You should be able to just ask them. Send a letter to the insurance company making them aware an erroneous overpayment was made. Ask them what you need to do to submit your dispute (e.g. A guide and tips for Ohio Unemployment Appeal Letters, including a sample template, from experienced unemployment attorneys.