Allegations of "sweatshop" labour conditions for workers making outfits for Olympic volunteers are being investigated by Adidas.
The London Organising Committee of the Olympic Games (Locog) has said it is taking the claims made in The Independent "extremely seriously".
The paper alleged that Olympic merchandise which will be worn by British athletes and volunteers at the Games "is being manufactured for Adidas in sweatshop conditions in Indonesia".
Workers at nine Indonesian factories which have contracts to produce Olympic shoes and clothing for Adidas are allegedly working up to 65-hour weeks and earning as little as 34p an hour.
A spokeswoman for Locog said: "We place a high priority on environmental, social and ethical issues when securing goods and services and take these allegations extremely seriously.
"We have spoken to Adidas and they have assured us that they are investigating these allegations, the conclusions of which will be made public.
"We regularly remind all of our licensees of the importance we place on the sustainable sourcing code they have each signed up to."
Neither Adidas nor Team GB could be reached for comment.