[2] Fantozzi worked at La Sapienza University as full professor of tax law from 1974 to 1990.
[2] In May 1996, Fantozzi was appointed foreign trade minister to the coalition government led by Romano Prodi.
[8] After leaving office, Fantozzi began to serve as the chairman of the budget, treasury and economic planning committee.
[6] In addition, he was one of the board directors of the Benetton Group and serves as a member of the Consulta, which is an advisory body for the Vatican concerning the efficient running of the state.
[6] In August 2008, Fantozzi was named by the Italian government as Alitalia's extraordinary administrator or commissioner, and he oversaw the firm's bankruptcy process.