This article examines whether the EU social security coordination Regulations 883/2004 and 987/2009 contribute or fail to contribute to the EU policy objective of guaranteeing adequate social protection and fighting against poverty as set by Article 9 TFEU. Even if this coordination system does not directly interfere with the social protection systems of the Member States, it plays an important role in preventing persons who use the right to free movement within the EU from ending up in a situation in which they would lose entitlement to social benefits because of their migration. In analysing this issue I will concentrate on the role of the underlying general principles of this coordination, more specifically, on the rules for the determination of the applicable legislation, the principle of equal treatment, the export of benefits and the aggregation of periods. I will also elaborate on a number of examples where this coordination system fails to prevent the loss of entitlement to social benefits, such as the position of workers in non-standard forms of work, the limited rights of economically inactive migrants, the recent introduction of waiting periods for newcomers, and situations in which the migrants risk falling between two stools. I will conclude with the notion of fairness.

中文翻译：

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欧洲社会保障协调在保障移民社会福利方面的作用和局限性

本文考察了欧盟社会保障协调条例 883/2004 和 987/2009 是否有助于或未能有助于实现欧盟第 9 条 TFEU 规定的保障充分社会保护和消除贫困的政策目标。即使该协调系统不直接干预成员国的社会保护系统，它也发挥着重要作用，可防止在欧盟范围内使用自由流动权的人最终陷入失去权利的境地。由于他们的迁移而获得社会福利。在分析这个问题时，我将专注于这种协调的基本一般原则的作用，更具体地说，是关于确定适用立法的规则、平等待遇原则、利益的输出和时期的聚合。我还将详细说明该协调系统未能防止丧失社会福利权利的一些例子，例如从事非标准工作形式的工人的地位、经济上不活跃的移民的有限权利、最近引入的新移民的等待期，以及移民有可能在两次大便之间跌倒的情况。我将以公平的概念结束。以及移民有可能在两个凳子之间跌倒的情况。我将以公平的概念结束。以及移民有可能在两个凳子之间跌倒的情况。我将以公平的概念结束。