The Sri Lanka Administrative Service (SLAS) is the key administrative service of the Government of Sri Lanka, with civil servants working for both in the Central Government as well as in the provincial councils. It was formed as the Ceylon Administrative Service (CAS) in 1963 as the successor to the Ceylon Civil Service which was abolished on May 1, 1963. It is the senior of the public services.
Based on the British Civil Service the SLAS is the permanent bureaucracy that helps the elected officials on day-to-day functions of government. They are selected, promoted by the Public Service Commission. But top positions in the government such as Permanent Secretaries are appointed by the President, in theory on the recommendations of the Public Service Commission.
A Permanent Secretary is the top bureaucrat of the government ministry and is responsible for the day-to-day functions of the ministry where as in theory the minister is responsible only for drafting policy. The head of the SLAS is the Secretary to the President.