Francois Fillon, a key ally of French President Nicolas Sarkozy, has been appointed the country's new prime minister in a ceremony in
Mr Fillon, 53, a moderate conservative senator, helped direct Mr Sarkozy's successful election campaign.
He is expected to play a leading role in the president's plans to reform
Mr Sarkozy, who succeeded Jacques Chirac on Wednesday, is due to name the rest of his government on Friday.
He has promised to halve the number of government ministers to 15, and has said about half will be women.
The outgoing prime minister, Dominique de Villepin, who resigned from the post on Tuesday, received his successor and formally handed over power in a ceremony on Thursday morning.
In line with tradition, the Republican Guard was deployed in ceremonial uniform and Mr Fillon arrived via a red carpet laid out across the courtyard at the prime minister's official residence, the Matignon.
During the ceremony the new prime minister said: "I will listen to everyone because a
Afterwards Mr de Villepin emerged from the Matignon, wished Mr Fillon good luck and said: "He has all the necessary qualities to succeed in the service of our country."
Mr Fillon served as social affairs minister between 2002 to 2004, pushing through a major overhaul of the country's pension system in the midst of large street protests.
He has also served in several other government posts for the UMP party, but lost his place in Mr Chirac's administration in 2005 and pledged his loyalty to Mr Sarkozy.
Reform agenda
The new president said on his first day in office that
"There is a demand for change. Never have the risks of inertia been so great for
Shortly afterwards, the pair put on their jogging kits and went for a brisk run around the
The BBC's Caroline Wyatt, in
It is clear that Mr Sarkozy and Mr Fillon are serious about getting this nation moving again, she says, beginning by setting their own personal example.
Mr Fillon's renowned conciliatory skills will be much needed as prime minister if he is to succeed in a post often described as a poisoned chalice, says the BBC's Alasdair Sandford in
Mr Fillon will lead the UMP party into parliamentary elections in June.
Opinion polls suggest the party will gain a majority, giving Mr Sarkozy and Mr Fillon the scope to push ahead with reforms.
Photo caption
Francois Fillon and Nicolas Sarkozy