An overpayment is when you receive benefits you are not eligible for. The key is to ensure you have a voluntary agreement in writing with the employee before any deductions are taken.The salary overpayment resulted because . This model letter as a legally approved form for a client to use when informing an employee about correcting a wage overpayment. 1.2. City Recognition. Blank SAR 7 Forms are also available at Alameda County Social Services Agency offices. You can find instructions on how to fill out the SAR 7 form here: