The Executive Office of the President (EOP) consists of the immediate staff of the President of the United States, as well as multiple levels of support staff reporting to the President.
the current figures for the EOP are about 1,800 full-time equivalent employees. These employees work in the East Wing and the West Wing of the White House and in the Executive Office Building, an extension of the White House.
The East Wing houses offices for the first lady, White House Social Secretary, White House Calligrapher, and correspondence staff, and other members of the White House staff.
The West Wing is the part of the White House Complex in which the Oval Office, the Cabinet Room, and the Situation Room are located. Besides serving as the day-to-day office of the President of the United States, it includes offices for senior members of the Executive Office of the President of the United States and their support staff.
Senior staff within the Executive Office of the President have the title "Assistant to the President". Second-level staff have the title "Deputy Assistant to the President", and third-level staff have the title "Special Assistant to the President". Very few are required to be confirmed by the Senate, although there are a handful of exceptions to this rule (e.g., the Office of Management and Budget Director, and the United States Trade Representative). The core White House Staff appointments do not require Senate approval. The staff of the Executive Office to the President is headed by the White House Chief of Staff.
The Executive Office of the President includes personnel who directly support or advise the President of the United States and are not members of the Cabinet.