43While it is true that the risk of seriously undermining the financial balance of the social security system may constitute an overriding reason in the general interest (see, inter alia, Case C-158/96 Kohll [1998] ECR I-1931, paragraph 41), such a risk has not been established in the present case. The contributions lost to the German social security system can be reduced. First, while a person seeking employment who is recruited in another Member State is no longer required to pay social security contributions in his Member State of origin, that State is no longer required to pay him unemployment benefit. Secondly, it is of the essence of the freedom of movement for workers laid down by the Treaty that the departure of a worker to another Member State may be counterbalanced by the arrival of a worker from another Member State.
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