Has Complexity of EU Law Increased?

The paper examines computationally whether the directives and regulations (DaRs) enacted in the European Union (EU) between 1990 and 2024 show signs of increased complexity. In total, a little over 1,7 thousand DaRs are examined based on snowball sampling. Eight metrics are used: a readability index and counts of articles, recitals, references, tokens, nouns, verbs, and adjectives. All except the readability index scores indicated increased complexity. With a caveat of fluctuations--complexity has not increased monotonically, the paper provides empirical evidence to enrich the quality of academic and political debates on the complexity of law and its consequences, including an alleged simplification need.

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Publication Details

Published
2025-09-20
DOI
https://doi.org/10.31235/osf.io/82uan_v1
Primary Topic
European and International Law Studies
Type
article
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article

Has Complexity of EU Law Increased?

Jukka Ruohonen
European and International Law Studies
article

Has Complexity of EU Law Increased?

Jukka Ruohonen
article en

Abstract

The paper examines computationally whether the directives and regulations (DaRs) enacted in the European Union (EU) between 1990 and 2024 show signs of increased complexity. In total, a little over 1,7 thousand DaRs are examined based on snowball sampling. Eight metrics are used: a readability index and counts of articles, recitals, references, tokens, nouns, verbs, and adjectives. All except the readability index scores indicated increased complexity. With a caveat of fluctuations--complexity has not increased monotonically, the paper provides empirical evidence to enrich the quality of academic and political debates on the complexity of law and its consequences, including an alleged simplification need.

Openalex Percentile: Top 70%
European and International Law Studies
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Has Complexity of EU Law Increased? — Jukka Ruohonen · (2025) | TGRS Research Map | TGRS