Charities are aiming to make the London 2012 Olympics the most ethical and green Games ever.
Civic activism charity London Citizens negotiated a series of "ethical guarantees" with Lord Coe's bid committee, and is seeking a meeting as soon as a delivery team is announced.
WWF-UK will also help to implement an action plan to make the Games "zero-waste and low-carbon".
The five-page ethical deal includes a commitment to making the Olympics London's first 'Living Wage Zone', with all workers paid at least the hourly rate set by the Mayor's Living Wage Unit, currently £6.70 an hour.
Local firms will be first in the queue for contracts, and half of all land allocated for housing will be for affordable homes.
The deal was also signed by Mayor Ken Livingstone and the London Development Agency.
"One reason London won was because it had the ethical framework of economic guarantees built into the bid from the beginning," said Father Michael Copps, a member of London Citizens' Olympics Action Team.
The 'One Planet Olympics' initiative, developed by WWF, the BioRegional Development Group and the London 2012 bid team, aims to make the Games sustainable, measure its ecological footprint and provide a model for future Olympics.
Paul King, director of One Planet Living for WWF, said: "We have a unique opportunity to show we are the international leaders in environmental awareness. What happens now will shape future Olympic Games."