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Proportionality in EU Law

In EU Law, proportionality is a fundamental principle that governs the balance between the objectives pursued by EU institutions or member states and the rights and interests affected by their actions. It ensures that any measures taken are proportionate, necessary, reasonable and do not exceed what is required to achieve the intended goals. The principle of proportionality consists of four stages:


Stage 1: Legitimate Aim

There must be a legitimate aim for the measure being considered. This means that the objective pursued by the measure must be valid and permissible under EU law. It could be for reasons of public interest, public health, consumer protection, or any other legitimate policy objective recognised by the EU.


Stage 2: Suitability

The measure must be suitable or appropriate to achieve the legitimate aim. There should be a rational connection or evidence to demonstrate that the measure is likely to effectively contribute to the intended goal. The measure should be capable of achieving the desired objective.


Stage 3: Necessity

The measure must be necessary, meaning that there should be no less onerous alternatives available to achieve the legitimate aim. This stage involves assessing whether there are alternative measures that would be equally effective in achieving the desired objective but would impose lesser restrictions or burdens on individuals or entities affected by the measure.


Stage 4: Proportionality Stricto Sensu

The measure must be reasonable, taking into account the competing interests at stake. This stage involves balancing the benefits of the measure in achieving the legitimate aim against any potential negative consequences or impact on the rights, freedoms, or interests of individuals or groups. The measure should not impose disproportionate burdens or limitations when weighed against the intended objective.


The principle of proportionality is applied by the Court of Justice of the European Union, when reviewing the legality of EU legislation, administrative acts, or member state measures. It helps ensure that decisions and actions taken at the EU level are consistent with the rule of law and respect the rights and interests of individuals within the EU.


You can learn more about this topic with our EU Law notes.

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