Administration
The Office of Personnel Management administers the GS pay schedule on behalf of other federal agencies.
Changes to the GS must normally be authorized by either the president (via Executive Order) or by Congress (via legislation). Normally, the President directs annual across-the-board pay adjustments at the beginning of a calendar year after Congress has passed the annual appropriations legislation for the federal government.
Under FEPCA, the Bureau of Labor Statistics conducts annual surveys of wages and salaries paid to non-federal workers in designated locality pay areas. Surveys are used to determine the disparity, if any, between federal and non-federal pay in a given locality pay area. The Federal Salary Council (created by FEPCA) prepares recommendations concerning the composition of the designated locality pay areas and the annual comparability adjustment for each area, as well as an adjustment for all other workers outside these areas, referred to as "Rest of U.S.". The council's recommendations are transmitted to the President's Pay Agent (also created by FEPCA), which then establishes, modifies, or disestablishes individual locality pay areas and makes the final recommendation on pay adjustments to the president, who may either accept the agent's recommendations or (in effect) reject them through the submission of an alternative pay plan.
FEPCA also provides for an automatic annual across-the-board adjustment of GS pay rates. A common misconception is that the annual federal pay adjustments are determined according to cost of living fluctuations and other regional considerations. In fact, the across-the-board adjustments to the GS (but not locality pay) are determined according to the rise in the cost of employment as measured by the Department of Labor's Employment Cost Index, which does not necessarily correlate to the better-known Consumer Price Index, which tracks consumer prices.
Read more about this topic: General Schedule (US Civil Service Pay Scale)