Luxembourg's long-serving premier Jean-Claude Junker moved into opposition on Wednesday. The reigns of government were handed to liberal Prime Minister Xavier Bettel, who emerged as winner of snap elections in October.
Grand Duke Henri - Luxembourg's head of state - swore in Bettel's new three-party coalition cabinet, consisting of 15 ministers and three state secretaries.
Juncker, aged 58, gained prominence throughout Europe as a founding father of the euro, and as the first president of the Eurogroup of eurozone finance ministers.
In the snap elections in October, the Liberal, Socialist and Green parties won a total of 32 seats.
New three-way coalition
Bettel heads a coalition of Liberals, Social Democrats and Greens who won a combined majority of 32 out of 60 seats in Luxembourg's election on October 20.
The victory was enough to form a majority coalition in the country's 60-seat, unicameral parliament, even though Juncker's Christian Democrats (CSV) remained the biggest party with 23 seats.
Juncker's CSV failed to find a coalition partner. The party's previous allies, the Social Democrats, withdrew their support in July over an intelligence service scandal.
Liberal reforms expected
Bettel's new government has pledged to introduce a raft of savings measures and wide-ranging tax reforms including a value added tax hike. They have also pledged to reform the secret service.
Bettel's cabinet is also expected to introduce same-sex marriage and other changes like replacing religious instruction in school with more general ethics classes.
Estonia's Ansip now longest-serving
The distinction of longest-serving premier now passes to Estonian Prime Minister Andrus Ansip, who took office in April 2005.
The CSV, which Juncker will lead in opposition, had appointed every prime minister in Luxembourg since World War II, with the exception of a five-year stint in opposition from 1974 to 1979.
Luxembourg is one of the European Union's smallest but wealthiest States. The banking hub has a population of about 500,000 people.
ipj/rc (AP, dpa, Reuters)