Most federal employees (59.1%) are paid on the General Schedule (GS), a pay scale that consists of 15 pay grades in which an employee's pay increases are to be based on performance and length of service. Some Members of Congress, citizens, and public administration scholars have argued that federal employee pay advancement should be more closely linked to job performance than it currently is on the GS. With these concerns in mind and with explicit congressional authorization, the Department of Defense (DOD) began developing the National Security Personnel System (NSPS) in 2003 as a unique pay scale attempting to more closely link employee pay to job performance. NSPS was beset by criticisms since it went into effect in 2006. The system faced legal and political challenges from unions and employees who claimed it was inconsistently applied and caused undeserved pay inequities, among other concerns. On October 7, 2009, House and Senate conferees reported a version of the National Defense Authorization Act for Fiscal Year 2010 that included language to terminate NSPS. On October 8, 2009, the House agreed to the conference report. The Senate agreed to the conference report on October 22, 2009. On October 28, 2009, the President signed ...