The revision is to reflect project underperformance in Engineering, Construction and Maintenance with increased the forecast net costs by $43 million.
Meanwhile, Downer EDI announced today that it had been awarded a five-year contract, valued at approximately $600 million, to provide mining and related services at the Meandu Mine in Queensland.
Shares in Downer EDI (ASX:DOW) are trading 22.1 per cent lower at $6.82.