Hájek studied and worked as a lawyer in the Charles University. From a young age he was a member of the Czechoslovak Social Democratic Party. During World War II Hájek was imprisoned (1939–1945). After the war he became a member of parliament for the Czechoslovak Social Democratic Party (1945–1948) and probably also a secret member of the Communist Party (code name E-22). During 1948 – 1969 he was a member of the Central Committee of the Communist Party of Czechoslovakia, during 1950 – 1953 he was the rector of the University of Economics.
Diplomacy
From 1955 Hájek worked in diplomacy: in 1955–1958 as an ambassador in Britain, in 1958–1962 as a deputy of the minister of foreign affairs, and in 1962–1965 he represented Czechoslovakia in United Nations. Between 1965 and 1968 he was the minister of education. From April to September 1968, he served as the minister of foreign affairs in Dubček's government. After the Soviet Union army took control over Czechoslovakia (21 August 1968) he protested against this in a speech at the United Nations (where he used the word occupation) – this caused his dismissal from high offices and even from the communist party (1970).
Jiří Hájek emerged as one of three leading spokesmen of Charter 77, thus becoming the target of police interrogations and threats. He was a strong defender of this uncompromising document, which voiced the principles of universal human rights. In 1987, Hájek was awarded the first ever Professor Thorolf Rafto Memorial Prize.
