We have identified the following overpayment and are in good faith voluntarily refunding all monies collected in error. Refund Letter Format: Requesting someone for the refund of your amount paid?Refund request form. The salary overpayment resulted because . 1. Read the letter thoroughly to understand the context. Read through this page to discover everything you need to know, from how to make payments to when and how you'll receive a refund to avoiding certain fees. Initial Refund Response Letter Examples. Efficiently address and acknowledge customer refund requests with these response letter samples. To receive a refund of the overpayment, attach the Employer's Refund Request (Form 4854PDF Document). The refund sample is usually not requested in OHE's original sample letter to an institution, but will be requested later in the process.