Chairman David Mortimer told shareholders on Thursday that core operating businesses remained strong.
"The core operating businesses remain strong and the group has generated a profit after tax (unaudited) of A$131 million, an increase of 25 per cent on the prior first quarter," Mr Mortimer said.
"The group's outlook for the 2010 financial year remains solid, despite the impact of the global financial crisis."
The company said first quarter revenue was up ten per cent at A$4.5 billion, with full year revenue on track to exceed A$19 billion.
Full year net profit is expected to be about A$600 million, up from last financial year's A$440 million.
Leighton says work in hand at September 30 was A$38.3 billion.
Mr Mortimer said a decline in some of Leighton's core markets had been countered by government spending and economic stimulus in both Australia and overseas.
Chief executive Wal King said the outlook for construction was positive.
"We see a positive long-term outlook for infrastructure spending in Australia, buoyed by our growing population, catch-up spending after long periods of under investment and a growing involvement of the private sector in financing and developments."
He said engineering construction was expected to grow by A$140 billion by 2018.
Leighton's shares were up 34 cents or one per cent at A$34.32 at 1027 AEDT.
(AAP) rw

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