World football's governing body has given Qatar two weeks to explain how welfare and living conditions for workers building 2022 World Cup projects are improving.
FIFA says it expects to be sent "information on the specific steps" that have been taken since President Sepp Blatter visited Qatar after rights groups criticised conditions for migrant workers.
FIFA Secretary General Jerome Valcke wrote on Thursday to Qatar asking for that "detailed report on the improvement of working conditions" by February 12.
FIFA executive committee member Theo Zwanziger is working with the International Trade Union Confederation to resolve concerns about Qatar.
And Zwanziger says "what we need are clear rules and steps that will build trust and ensure that the situation, which is unacceptable at the moment, improves in a sustainable manner".
