Introduction
On 24 October 2024, the European Parliament and the Council adopted Directive 2024/2831 on improving working conditions in platform work, commonly referred to as the Platform Work Directive. This legislative measure has sparked significant controversy across Member States, with strong opposition from digital platforms such as Uber and particular concerns raised by Member State X, a fictional EU Member State. Within the Council of Ministers, X argued against the adoption of the Directive, contending that it is unlawful on two primary grounds: first, that EU-level rules on defining ‘worker’ status are unnecessary and should remain a national competence; and second, that the Directive infringes its national constitution, specifically Article 17, which assigns the judiciary the duty to assess facts in employment relationships. Now that the Directive has been adopted, this essay explores whether Member State X can challenge its legality before the Court of Justice of the European Union (CJEU) and evaluates the likelihood of success concerning the two issues raised. Through an analysis of EU law principles, including subsidiarity, proportionality, and the relationship between EU and national law, this essay argues that while X has the legal standing to challenge the Directive, its chances of success are limited due to the CJEU’s established jurisprudence and the nature of EU competences in social policy.
Legal Basis for Challenging the Directive
Under EU law, Member States have the right to challenge the legality of EU legislative acts through an action for annulment under Article 263 of the Treaty on the Functioning of the European Union (TFEU). This provision allows Member States, as privileged applicants, to seek the annulment of an EU act if they can demonstrate that it violates EU law principles, such as competence, subsidiarity, or proportionality, or infringes fundamental rights or national constitutional principles in a manner incompatible with EU law (Craig and de Búrca, 2020). Given that Member State X voted against the adoption of the Platform Work Directive in the Council of Ministers, it can rely on its status as a privileged applicant and does not need to prove a direct and individual concern, unlike non-privileged applicants. Therefore, X has a clear procedural pathway to bring a case before the CJEU within the two-month time limit specified in Article 263 TFEU, which, as of 14 November 2024, remains open. However, the substantive grounds for annulment—necessity of EU-level rules and conflict with national constitutional law—require closer examination to assess the likelihood of success.
Issue 1: Necessity of EU-Level Rules on Worker Definition
Member State X contends that defining the term ‘worker’ within the context of the Platform Work Directive is unnecessary at the EU level and should remain within national competence. This argument appears to invoke the principle of subsidiarity, enshrined in Article 5(3) of the Treaty on European Union (TEU), which stipulates that the EU should only act where objectives cannot be sufficiently achieved by Member States and can be better achieved at the Union level (Craig and de Búrca, 2020). Additionally, it may relate to the scope of EU competence in social policy under Article 153 TFEU, which includes working conditions but often allows for significant national discretion.
However, the chances of success on this ground seem limited. The CJEU has historically interpreted the principle of subsidiarity with a degree of deference to EU institutions, particularly in areas of shared competence such as social policy. In cases like United Kingdom v Council (Case C-84/94), the Court upheld EU action on working conditions, reasoning that disparities in national laws could distort competition and hinder the functioning of the internal market (Barnard, 2012). Given that platform work often transcends national borders—think of platforms like Uber operating across multiple Member States—the EU legislature can arguably justify harmonised rules to ensure a level playing field and protect workers consistently. Furthermore, the Platform Work Directive likely includes a recital or preamble explaining the necessity of EU action, which the CJEU typically accepts unless clearly unfounded. Thus, while X may argue that national labour market conditions vary significantly, the Court is unlikely to find a breach of subsidiarity, as the cross-border nature of platform work provides a plausible rationale for EU intervention.
Issue 2: Infringement of National Constitutional Law
The second ground raised by Member State X concerns the alleged infringement of its national constitution, specifically Article 17, which entrusts the judiciary with assessing facts in employment relationships. X appears to argue that the Directive’s provisions—perhaps those introducing presumptions or criteria for determining worker status—interfere with this judicial function, thereby violating a core constitutional principle. This raises the complex issue of the relationship between EU law and national constitutional law, governed by the principle of primacy of EU law established in *Costa v ENEL* (Case 6/64).
The CJEU has consistently held that EU law takes precedence over national law, including constitutional provisions, to ensure the uniform application of EU rules across Member States (Craig and de Búrca, 2020). In cases such as Internationale Handelsgesellschaft (Case 11/70), the Court ruled that even fundamental national constitutional principles must yield to EU law, provided the EU act falls within its competence. While the CJEU has shown some sensitivity to national constitutional identities under Article 4(2) TEU, as seen in cases like Omega Spielhallen (Case C-36/02), this respect is limited and does not permit Member States to unilaterally disapply EU law. For X to succeed, it would need to demonstrate that the Directive constitutes a disproportionate interference with a core element of its constitutional identity—a high threshold to meet (Barnard, 2012).
Moreover, EU directives typically allow Member States flexibility in implementation, meaning X could potentially adapt the Directive’s provisions to align with its constitutional requirements. If the Directive mandates specific criteria for worker status that directly conflict with judicial assessment, X might argue a breach of proportionality. However, without specific details of the Directive’s text (which are unavailable as of this hypothetical analysis on 14 November 2024), it is reasonable to assume that the CJEU would prioritise EU law’s effectiveness over national constitutional constraints, reducing X’s likelihood of success on this ground. Indeed, the CJEU often balances such conflicts by encouraging national courts to interpret domestic law in light of EU obligations, as seen in Von Colson (Case 14/83).
Conclusion
In conclusion, Member State X has a clear legal basis under Article 263 TFEU to challenge the legality of the Platform Work Directive before the CJEU, leveraging its status as a privileged applicant. However, the likelihood of success on the two grounds raised appears slim. On the issue of the necessity of EU-level rules for defining ‘worker,’ the principle of subsidiarity and the cross-border nature of platform work provide a strong justification for EU action, which the CJEU is likely to uphold. Similarly, the alleged infringement of X’s national constitution under Article 17 is unlikely to succeed given the primacy of EU law and the limited scope for invoking constitutional identity as a defence. While X may raise valid concerns about national autonomy and judicial functions, the CJEU’s established jurisprudence prioritises the uniform application of EU law, particularly in areas of shared competence like social policy. The implications of this analysis suggest that Member States must navigate such disputes through political dialogue during the legislative process or seek flexible implementation, rather than relying on post-adoption legal challenges. Ultimately, while X can challenge the Directive, a successful annulment remains improbable, underscoring the tension between national sovereignty and EU integration in contemporary labour law.
References
- Barnard, C. (2012) EU Employment Law. 4th edn. Oxford University Press.
- Craig, P. and de Búrca, G. (2020) EU Law: Text, Cases, and Materials. 7th edn. Oxford University Press.
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