Demonstrators hold placards calling for change in Qatar's policies regarding the working conditions of migrant workers in light of the increased construction to provide the infastructure for the Gulf state to host the FIFA World Cup in 2022 ahead of the international friendly football match between Scotland and Qatar at Easter Road Stadium, Edinburgh on June 5, 2015. Qatar has come under huge international pressure for its treatment of migrant labourers from rights groups, trades unions and campaigners. The tiny Gulf state has been criticised for its use of the kafala system -- which has been likened to modern-day slavery -- confiscation of labourers' passports, non-payment of staff, squalid accommodation and working conditions in fierce desert temperatures. Some 3,500 labourers have worked on the five stadiums which are in the stages of preparation for the FIFA World Cup in 2022. In response to an Amnesty report accusing Doha of failing to deliver on promised reforms to their policies concerning migrant workers Qatar has insisted on May 21 it was "committed" to improving conditions for its huge number of migrant labourer, saying in a statement that "significant changes have been made over the last year to improve the rights and conditions of expatriate workers" . AFP PHOTO / ANDY BUCHANAN (Photo by Andy Buchanan / AFP)