The notice will provide the tax type from which the overpayment originated and tax type to which it is being applied. Serving a penalty week and recouping an overpayment cannot be done in the same week.The salary overpayment resulted because . You can also obtain a form from the Department of Public Welfare or Allegheny County Family Division. Tax Forms, Work From Home - Local Services Tax and Payroll Expense Tax Information(PDF, 245KB), Important Information for City of Pittsburgh Taxpayers. Even if you have employer withholding or are not expecting a refund, you must still file a return. Find useful forms for property assessments, real estate property and deeds, Military Discharge (DD214) requests, and more.