But the statement from credit card company Visa http://www.orderfifacoins.com/ is the strongest public expression of unease yet from a FIFA sponsor about the plight of workers in the tiny oil and natural gas-rich country. We continue to be troubled by the reports coming out of Qatar related to the World Cup and migrant worker conditions, Visa said in a statement. We have expressed our grave concern to FIFA, and urge them to take all necessary actions to work with the appropriate authorities and organizations to remedy this situation and ensure the health and safety of all involved. Adidas, the World Cup ball provider since 1970, said it remains in constant dialogue with FIFA and pointed to pressure already being applied on Qatar by soccer's governing body. There have been significant improvements and these efforts are ongoing, but everyone recognizes that more needs to be done in a collective effort with all stakeholders involved, Adidas said in a statement.FIFA financial accounts indicate that Adidas, Visa and Coca-Cola pay around $30 million a year to sponsor world soccer's governing body, which surprisingly selected Qatar as the first Middle East country to host the World Cup.Since the 2010 vote, Qatar has faced twin-pronged scrutiny over alleged corruption in the bid and conditions for low-paid migrant workers.Coca-Cola stressed in a statement that it does not condone human rights abuses but, like Adidas and Visa, did not threaten to withdraw its sponsorship over Qatar concerns. We know FIFA is working with Qatari authorities to address questions regarding specific labour and human rights issues, the Atlanta-based soft drinks manufacturer said in a statement. We expect FIFA to continue taking these matters seriously and to work toward further progress.