Targets to employ east London construction workers at the Olympic Park are being surpassed, the Olympic Delivery Authority (ODA) has said.
More than 20% come from one of the five east London Olympic boroughs of Greenwich, Hackney, Newham, Tower Hamlets and Waltham Forest.
ODA chairman John Armitt said it was a "tough time" for the construction industry.
The Olympic Park has 6,243 staff with 4,090 working on the Olympic village.
The ODA's workforce figures for September 2010 show 3,166 training places at the Park have been secured through the special construction academy and training centre set up in Newham.
Mr Armitt said: "The Olympic Park and Village 'big build' are on track thanks to the hard work of everyone on the site.
"In a tough time for the construction industry we are providing jobs for over 10,000 workers and meeting our commitments to safety, training and employing local people and apprentices."
The ODA's target was to have 15% of construction workers from the region.