In the case of Spain, the chief of staff is a political position held by people close to the prime minister, but with less public relevance than their counterparts in the United States
[White House Chief of Staff] or Germany
Head of the Federal Chancellery], among others, since, in Spain, the chief of staff usually has an almost "invisible" role, not being part of the
Council of Ministers, with few appearances in the press and, on many occasions, without accompanying the head of government at public events—with the exception of some such as
Jorge Moragas—. Although initially the role of this position was not strictly regulated, it now has very well-defined functions outlined in the royal decrees that the prime minister approves at the beginning of each term to organize their working environment, that is, the
Office of the Prime Minister. This regulatory evolution has been made possible by the evolution of the Prime Minister's Office itself, but it has always shared one common element: the chief of staff's power comes from what the prime minister chooses to grant them. Thus, the position has gone from having a minor regulation and the administrative rank of director-general during the premierships of
Adolfo Suárez and
Leopoldo Calvo-Sotelo, to being a key player in matters as important as
national security or
crisis management since the
premiership of José Luis Rodríguez Zapatero, reaching its highest level of authority during the
premiership of Pedro Sánchez, who created a Steering Committee that place under the control of the chief of staff, among other bodies, both the
Secretariat of State for Press and the General Secretariat of the Prime Minister's Office—which had been under the chief of staff since 2017 and from which the chief of staff had been stealing responsibilities for some time—. For this, the chief of staff currently constitutes the center of power of the Prime Minister's Office. ==Cabinet Office==