He was also the personal reporter for then Leader of the Malta Labour Party and Prime Minister, Dr Karmenu Mifsud Bonnici.

In 1994 he was elected and nominated first Deputy Mayor of St Julian's, after polling the largest number of votes among independent candidates.

From 2003 to 2008 he served with Karmenu Vella and Evarist Bartolo as spokesperson for tourism, Air Malta, and hotels industry.

During his ten-year parliamentary career Joseph Cuschieri served on delegations to the United Kingdom, Isle of Man, Tunisia, Australia, South Korea, Germany, Palestine, Israel and Jordan, among others.

Joseph Muscat thanked Cuschieri for "his extraordinary and generous decision",[4] and Charles Mangion, former Deputy Leader of the Labour Party for Parliamentary Affairs and acting Opposition Leader Charles Mangion, described Cuschieri as a hard worker and remarkably altruistic, calling his resignation historically and politically important for the country.

[6] Cuschieri has contested the 2009 European Parliament Elections and has garnered the 4th largest numbers of first count votes among all candidates.