Running fast.

''Track and field is my job. This is what I do, I work,'' Bolt said in Zurich, where he will race for the first time since Beijing in the 100m tomorrow.

''Right now I'm just trying to get my blood pumping pretty much. I've been doing a little bit of training and just looking forward to the meeting.''

The new Olympic champion and world record holder at 100m and 200m landed in Switzerland Monday, direct from China for the first of three European meets before he can head back to an inevitable hero's welcome in Jamaica.

''I know the celebrations will wait till I get home so I'm not worried,'' the 22-year-old said.

The work promises to be lucrative if Bolt can lower the world record time of 9.69sec he set with ease in the Olympic 100 final.

The Weltklasse meet organisers have offered a world record bonus of $US50,000 ($A58,300) and a one kilogram gold bar worth around $US27,000 ($A31,500).

Bolt will get another $US16,000 ($A18,700) for winning the race, adding up to a potential haul of $US93,000 ($A108,400).

''I don't know what time I will run,'' Bolt said. ''I am just trying to come here and let the fans enjoy my performance.''

Coach Glenn Mills said his athlete had been in heavy demand to attend functions for sponsors, media and the Jamaican government.

''He hasn't really had time to get rest and training,'' Mills said.

''But he is still pretty much in good shape and he will put on a good show.''

As the new superstar of athletics, it is a lifestyle that Bolt will have to get accustomed to while being hailed by commentators as the man to restore the sport's credibility and popularity after two decades of doping scandals.

Bolt said he was ready to accept some of the responsibility to regain the trust of suspicious fans.

''I am just trying to help [the sport],'' he said. ''It is a good thing I am doing. I hope other people see that.''

Bolt is scheduled for a rematch with Olympic runner-up Richard Thompson of Trinidad and Tobago and Walter Dix of the United States, who won the bronze medal.

The Zurich meet has attracted a sell-out crowd of 26,000. AP