The PlumbookThe U.S. Government Policy and Supporting Positions (Plumbook) is published every four years after a presidential election. The current edition contains data (as of June 30, 2016) on over 9,000 Federal civil service leadership and support positions in the legislative and executive branches of the Federal Government that may be subject to noncompetitive appointment (e.g., positions such as agency heads and their immediate subordinates, policy executives and advisors, and aides who report to these officials).
