Unions accused furniture retailer Ikea on Thursday of undermining workers’ rights in the Republic, the US and Portugal, and asked the Dutch government to mediate. The international UNI Global Union and other workers’ groups including Mandate said in a letter to the Dutch government’s point of contact with the Organisation for Economic Cooperation and Development (OECD) that Ikea Group had acted against OECD guidelines by not curbing anti-union conduct by managers in the three countries.