The Rosella or International Transport Workers Federation v Viking Line ABP (2007) C-438/05 is an EU law case, relevant to all labour law within the European Union, including UK labour law, which held that there is a positive right to strike. However, it also held that the right to strike could infringe a business's freedom of establishment under the Treaty on the Functioning of the European Union article 49 (ex Article 43 TEC). The decision has been criticised for the Court's inarticulate line of reasoning, and its disregard of fundamental human rights.