Construction companies are currently barred from promoting their work by mentioning the Olympics.
But any relaxation of the marketing rules will not kick-in until the games are finished.
The rules are designed to protect official sponsors of the games.
Former Olympics minister Tessa Jowell raised the issue in Parliament this week as John Armitt, chairman of the Olympic Delivery Authority said 2012 would be a great advertisement for Britain’s construction industry.
Jowell said: “Those businesses that have done so well and are rightly proud of their contribution to this year’s Games are too tightly bound by the marketing rights protocol which is preventing them from revealing the part they have played.”