Federal employees are paid according to policies governed by the Office of Personnel Management. The office sets wage scales that correspond to a federal employee's pay status. For example, employees who are considered white-collar professionals are paid through the government service scale, and elected officials are paid on an executive scale. Some positions advance employees through steps depending on job performance and years of service. Also, some salaries are set by Congress.
Seeking Out Salaries
The Office of Personnel Management lists charts showing all federal employee pay. The link for current salaries, "Pay & Leave," can be found at the bottom of the OPM homepage. Also, you can find salaries of previous years in the archives section of the OPM website. The OPM lists the current year and locality pay as well. Note that archived pay charts date back to 1978.