Qatar said the "tone of Amnesty International's latest assertions paint a misleading picture"..."We have always maintained this World Cup will act as a catalyst for change -- it will not be built on the back of exploited workers," said the gulf kingdom's Supreme Committee for Delivery & Legacy in a statement sent to CNN. "We wholly reject any notion that Qatar is unfit to host the World Cup. Amnesty International's investigation was limited to just four companies out of more than 40 currently engaged on Khalifa International Stadium. The conditions reported were not representative of the entire work force on Khalifa. Many of the issues raised had been addressed by June of 2015, months before the publication of Amnesty's report."

Watch: Hassan Al-Thawadi, Secretary General of the Qatar 2022 Supreme Committee, tells CNN that Qatar is taking migrant workers abuse seriously...[refers to measures taken against companies mentioned in Amnesty International's report].