The salary overpayment resulted because . You can use our template letter below to stop any deductions and to ask for a full breakdown of the overpayment.A sample form for an employee to agree to repayment of a wage overpayment error. Our Overpayment Notification Letter Template addresses overpayment errors promptly, ensuring clear communication and resolution for all parties involved. Use this model letter to confirm to an employee that your organisation has been repaid the sum that they were accidentally overpaid in wages. How employers and employees should handle overpayments and agree how money owed should be paid back. Sign Form 8868 electronically using the Practitioner PIN. NOTE - A practitioner PIN or Form 8453 is required for Form 8868 efile.