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 aims to standardise the definition of ‘worker’ in the context of platform-based employment across the European Union (EU) and ensure better protections for such workers. However, its adoption has sparked significant controversy, notably in Member State X, a fictional EU Member State, which opposed the Directive within the Council of Ministers. X contends that the Directive is unlawful on two primary grounds: firstly, that EU-level rules on defining ‘worker’ are unnecessary and infringe on national competence; and secondly, that the Directive violates its national constitution, specifically Article 17, which entrusts the judiciary with assessing employment relationships. As of 14 November 2024, with the Directive now adopted, this essay examines whether X can challenge its legality before the Court of Justice of the European Union (CJEU) and evaluates the prospects of success concerning the two issues raised. The discussion will consider the legal framework for challenging EU legislation, the principles of subsidiarity and proportionality, and the interaction between EU law and national constitutional provisions.
Legal Framework for Challenging EU Legislation
To assess whether Member State X can challenge the legality of the Platform Work Directive, it is essential to consider the mechanisms available under EU law. Article 263 of the Treaty on the Functioning of the European Union (TFEU) provides the basis for an action for annulment, allowing Member States to contest the legality of EU acts, including Directives, on grounds such as lack of competence, infringement of an essential procedural requirement, or violation of the Treaties or any rule of law relating to their application (Europa.eu, 2023). As a privileged applicant under Article 263 TFEU, Member State X has standing to bring such an action without needing to prove a direct or individual concern. Therefore, X can undoubtedly initiate proceedings before the CJEU to seek the annulment of the Directive.
Furthermore, the deadline for filing such an action is two months from the publication of the act in the Official Journal of the EU, as stipulated by Article 263 TFEU. Assuming the Directive was published shortly after its adoption on 24 October 2024, X would likely have until late December 2024 to lodge its application. As of 14 November 2024, this window remains open, and thus X retains the procedural right to challenge the Directive. The following sections will evaluate the substantive grounds of X’s challenge and the likelihood of success on each issue.
Issue 1: Necessity of EU-Level Rules on Defining ‘Worker’ and the Principle of Subsidiarity
The first issue raised by Member State X is the contention that EU-level rules defining ‘worker’ in the context of platform work are unnecessary and infringe on national competence. This argument engages the principle of subsidiarity, enshrined in Article 5(3) of the Treaty on European Union (TEU), which mandates that the EU should act only if the objectives of the proposed action cannot be sufficiently achieved by Member States and can, by reason of scale or effects, be better achieved at the Union level (Europa.eu, 2023). Additionally, the principle of proportionality under Article 5(4) TEU requires that EU action should not exceed what is necessary to achieve its objectives.
In assessing X’s challenge, the CJEU would examine whether the EU has demonstrated a clear need for harmonisation of the definition of ‘worker’ across Member States. Platform work, often involving gig economy roles facilitated by companies like Uber, has presented significant challenges in employment classification, with variations in national approaches leading to legal uncertainty and differing levels of worker protection (De Stefano, 2016). The EU’s rationale for the Directive likely rests on the cross-border nature of platform work and the need to ensure a level playing field within the internal market, as disparities in worker classification could distort competition.
However, X might argue that employment law remains a field of shared competence under Article 4(2)(b) TFEU, and Member States retain significant discretion in regulating labour relations. Previous CJEU jurisprudence, such as in Case C-376/98 Germany v Parliament and Council (Tobacco Advertising), has upheld strict scrutiny of EU competence when national autonomy is at stake (CJEU, 2000). If X can demonstrate that national mechanisms are sufficient to address platform work issues without EU intervention, the CJEU might find the Directive to infringe subsidiarity or proportionality. Nevertheless, given the transnational dimension of digital platforms, the Court is likely to prioritise the EU’s objective of harmonisation, particularly as the internal market is a core EU competence under Article 114 TFEU. Thus, while X’s argument has some merit, its chances of success on this ground appear limited, as the EU’s justification for acting is arguably robust.
Issue 2: Infringement of National Constitutional Provisions
The second issue concerns X’s claim that the Platform Work Directive violates its national constitution, specifically Article 17, which assigns the judiciary the exclusive duty to assess facts in employment relationships. This raises the question of whether national constitutional norms can serve as a basis for challenging EU legislation. Under the principle of supremacy, established in Case 6/64 Costa v ENEL, EU law takes precedence over conflicting national laws, including constitutional provisions, to ensure uniform application across Member States (CJEU, 1964).
While the CJEU acknowledges the importance of national constitutional identities under Article 4(2) TEU, it has consistently prioritised EU law’s uniform application over national constitutional objections. For instance, in Case C-399/11 Melloni v Ministerio Fiscal, the Court ruled that national constitutional standards could not undermine the effectiveness of EU law, even in areas touching on fundamental rights (CJEU, 2013). Applied to X’s situation, the Directive’s harmonised definition of ‘worker’ or associated procedural rules might conflict with national judicial autonomy under Article 17 of X’s constitution. However, the CJEU is unlikely to annul the Directive on this basis, as doing so would undermine the coherence of EU law across Member States.
Moreover, if X frames its argument around fundamental rights—arguing that judicial autonomy is integral to the rule of law—the Charter of Fundamental Rights of the EU might come into play. Yet, the CJEU would balance such claims against the Directive’s overarching aim of protecting workers, itself a fundamental social right under Articles 31 and 34 of the Charter. Given this precedent and the primacy of EU law, X’s challenge on constitutional grounds faces a low probability of success. The CJEU would likely uphold the Directive, potentially advising X to adapt its national framework to align with EU obligations while seeking minimal interference with constitutional norms.
Conclusion
In conclusion, Member State X has the procedural right to challenge the legality of the Platform Work Directive under Article 263 TFEU as of 14 November 2024, provided it acts within the two-month timeframe following the Directive’s publication. On the first substantive issue—the necessity of EU-level rules defining ‘worker’—X’s argument rooted in subsidiarity and national competence has some theoretical basis but is unlikely to succeed given the cross-border nature of platform work and the EU’s internal market objectives. On the second issue, regarding the infringement of its national constitution, the principle of supremacy of EU law renders X’s prospects of success even slimmer, as the CJEU prioritises uniform application over national constitutional conflicts. Therefore, while X can legally initiate a challenge, its chances of annulment are minimal on both grounds. This case underscores the tension between EU harmonisation and national sovereignty, a recurring theme in EU law, and suggests that X may need to focus on domestic adjustments or seek dialogue within EU institutions to address its concerns, rather than relying on judicial annulment.
References
- CJEU (1964) Case 6/64, Costa v ENEL, ECLI:EU:C:1964:66.
- CJEU (2000) Case C-376/98, Germany v Parliament and Council, ECLI:EU:C:2000:544.
- CJEU (2013) Case C-399/11, Melloni v Ministerio Fiscal, ECLI:EU:C:2013:107.
- De Stefano, V. (2016) The rise of the ‘just-in-time workforce’: On-demand work, crowdwork, and labor protection in the ‘gig-economy’. Comparative Labor Law & Policy Journal, 37(3), pp. 471-504.
- Europa.eu (2023) Consolidated Version of the Treaty on European Union and the Treaty on the Functioning of the European Union. Official Journal of the European Union.
