The public service of Ireland refers to the entirety of public administration within the state government apparatus. The Irish Department of Public Expenditure and Reform defines the Irish public service as consisting of:
Two-thirds of the public service is in the health and education sectors (doctors, nurses, consultants, teachers, classroom assistants, etc).
The Civil Service of Ireland is the collective term for the permanent staff of the departments of state and certain state agencies who advise and work for the Government of Ireland. It consists of two broad components, the Civil Service of the Government and the Civil Service of the State. Whilst these two components are largely theoretical they do have some fundamental operational differences.
The Civil Service of the Government advises and carries out the work of the Government, through the various Departments of State, of which there are fifteen; one for each Minister of the Government. Each department is led by a senior civil servant known as the Secretary General (often referred to as "departmental head" in the media), a title equivalent to that of Permanent Secretary in the British Civil Service. The most senior civil servant and head of the civil service is the Secretary General to the Government, currently Martin Fraser. The Secretary General to the Government is a dual-hatted position as they also head up the who also head up the Department of the Taoiseach, a government department analogous to a cabinet office in other countries.
The Civil Service of the State however is a relatively small component of the overall civil service, and its members are expected to be absolutely independent of the government, in addition to normal political independence which is expected. The Civil Service of the State typically comprises specialised agencies such as the Revenue Commissioners, Central Statistics Office, Office of Public Works, Comptroller and Auditor-General of Ireland, Courts Service of Ireland, Director of Public Prosecutions, Legal Aid Board and Prisons Service are all considered to be part of the Civil Service of the State, as opposed to being non-commercial semi-state bodies like Fáilte Ireland and IDA Ireland. Other offices are also prescribed under the Civil Service of the State.