33It follows that the principle of the prohibition of abuse of rights and Article 4(3) TEU, under which the Member States are required to take any appropriate measure, general or particular, to ensure fulfilment of the obligations resulting from European Union law and to refrain from any measure which could jeopardise the attainment of the Union’s objectives, cannot in principle preclude the application, in a case such as that in the main proceedings, of a provision of national law such as Article 3(2bis)(b) of Decree-Law No 40/2010.
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