Band 4 Pay Scale 2020 – Pay scales for federal employees to help define and assess personal overall performance. The Pay Scale Manual for Federal Employees (PSFE) guides employers to set and alter pay scales for federal employees. It doesn’t consist of facts unique to federal jobs. However, federal employees have certain job paths that could be connected to one more job path from the government. Therefore, job paths may also be incorporated during the Pay Scale Manual for Federal Employees.