02 February 2021

The French Habeas Corpus and Covid-19

The decision of the Constitutional Council on pre-trial detention

On 29 January 2021, the French Constitutional Council published an important decision on the protection of the right to liberty during the state of sanitary emergency. The Constitutional Council decided that extending the duration of pre-trial detention without a decision made by a judge was contrary to article 66 of the Constitution. The decision implies that while authorities can resort to exceptional powers during a pandemic, they must still respect basic human rights. The fight against Covid-19 does not justify any kind of restriction of individual freedom.

The state of sanitary emergency

The state of sanitary emergency was declared through an Act of Parliament of 23 March 2020. Under this Act, the Prime minister is given a range of exceptional powers in order to tackle the pandemic and the government is allowed to legislate on a number of issues. (See Aurore Gaillet & Maximilian Gerhold and my post). Article 11-I 2° d) of the Act of March 2020 authorized the government to legislate to adapt the rules on pre-trial detention. The Constitution (art. 38) provides that Parliament may authorize the government to legislate. The order (ordonnance) is granted the value of an Act of Parliament once it has been ratified by Parliament.  On 25 March 2020, the government adopted an order which automatically extended the duration of pre-trial detention. It was extended for six months for the most serious offences and to two or three months for the others. Despite the extension, it was still possible to go before a judge and ask to be released. The government wanted to avoid freeing prisoners because the courts were disorganized in the spring. Many people were concerned about the hygiene situation in jails because of the well-known overcrowding of French prisons, which is largely due to the number of prisoners awaiting their trial (29,5 percent, almost 20 000 at the beginning of 2018 according to the Council of Europe). The automatic extension of pre-trial detention was applied from 26 March until 11 May. There were so many protests that the Act of Parliament of 11 May 2020 (that extends the sanitary state of emergency) has suppressed it.

The decision by the Constitutional Council

Through a preliminary reference (question prioritaire de constitutionalité), the highest Court for criminal law (Cour de cassation) asked the Constitutional Council to assess the validity of the automatic extension. Article 66 of the Constitution provides that “No one shall be arbitrarily detained. The Judicial Authority, guardian of the freedom of the individual, shall ensure compliance with this principle in the conditions laid down by statute”. It is commonly referred to in France as the right to individual freedom or the French Habeas corpus.

In its decision of 29 January, the Constitutional Council has, rightly, decided that extending the duration of pre-trial detention without a decision made by a judge was contrary to article 66 of the Constitution. Article 66 has been interpreted for years as meaning that restrictions to individual freedom should be necessary, adequate, and proportional. A judge must decide as quickly as possible on any restriction. The pandemic does not justify any derogation.

The present decision must be read together with another decision on the same topic. On 3 July 2020, the Constitutional Council decided that the provision authorizing the government to legislate to extend the duration of pre-trial detention was not contrary to article 66 of the Constitution because it did not per se prohibit the intervention of a judge. The Constitutional Council explained that only on order based on the statutory authorisation might be deemed contrary to the Constitution. One could have read this interpretation as a warning to the government. The warning was not taken into account and six months later, the order was found contrary to the Constitution.

The Constitutional Council and the ECHR

The decision of the Constitutional Council is also consistent with the case-law of the European Court of Human rights. It is modelled on the case-law on the right to liberty and security (article 5 of the Convention). Nobody should be detained without a swift decision of a judge. It is also similar to the case law on derogations to the Convention under article 15. The Strasbourg judges do not really question the decision to derogate from the Convention. They accept that terrorism is a “threat to the life of the nation” that justifies derogations from the Convention, but they check that the derogations to article 5 are proportionate and that detention is still subject to the control of a judge (ECtHR, A v UK, 19.2.2009). In the same way, the Constitutional Council allowed the French Parliament to give exceptional powers to the government in order to tackle the pandemic but did not accept a blatant misuse of those powers by the government acting as legislator.

The decision by the Constitutional Council affirms an important principle: Despite being comparatively free to resort to exceptional powers, authorities still must respect basic human rights. It is reassuring to know that the fight against Covid-19 does not justify any kind of restriction of individual freedom and that the Constitutional council has played its role of guardian of the Constitution.

SUGGESTED CITATION  Haguenau-Moizard, Catherine: The French Habeas Corpus and Covid-19: The decision of the Constitutional Council on pre-trial detention, VerfBlog, 2021/2/02, https://verfassungsblog.de/the-french-habeas-corpus-and-covid-19/, DOI: 10.17176/20210202-115847-0.


  1. Mathieu Carpentier Tue 2 Feb 2021 at 13:21 - Reply

    “ the Constitutional council has played its role of guardian of the Constitution.“

    This is highly doubtful. The council is very good at making grand principled gestures while depriving them of all practical effect.

    The law the Council stroke down is no longer in force: so its decision has very little effect ex nunc. Moreover, the ex tunc effect of the decision amounts to rendering all past applications of the law immune from judicial review (see para 15)

    So the claimants have “won” their preliminary referral before the council, but they will not be able to challenge before the courts the unconstitutional extension of their pretrial detention. The decision has zero practical effect.

    So I advise that whatever enthusiasm is elicited by the council’s decision be seriously curbed.

    Mathieu Carpentier
    Professor of public law
    Université Toulouse Capitole

  2. Jacques Ziller Sat 6 Feb 2021 at 09:31 - Reply

    Two additional comments for those readers who are not familiar with French Law and who would read the post of Catherine Haguenau-Moizard too quickly:
    – the authorisation for the government to legislate was given under the procedure of art. 38 French constitution; contrary to some countries, e.g. Italy, the Government cannot adopt legislative-decrees without previous authorisation, even in case of emergency;
    – clearly the automatic extension of pre-trial detention did not apply to possible breaches of anti-covid measures, as the persons concerned were already detained.

    As for the comment by Mathieu Carpentier, there is a contradiction between par. 3 and 4 of his post. Furthermore, the courts that would be competent for challenges to the pretrial detention might not ask for contsitutional review, by they do not hesitate to make “conventional review” i.e. to disapply a French law because it is in breach of the ECHR and the Strasbourg jurisprudence. The Cour de Cassation proceeded in that way, and any criminal or civil court would do the same.

    • Mathieu Carpentier Wed 24 Feb 2021 at 19:14 - Reply

      I fail to see the contradiction. Maybe prof Ziller could explain to me what he has in mind here. The decision has zero practical effects: no effect ex tunc, because the past legal effects of the law cannot be challenged under the CC’s decision; no effect ex nunc, because the law was no longer applicable anyway.

      Yes the courts will accept challenged based on the ECHR (contrôle de conventionnalité), but not based on the CC’s decision. I never said otherwise. I only commented on the effects of the CC’s decision, not on all the legal venues otherwise open to the claimants.

      I actually wrote at length on these matters here https://www.conseil-constitutionnel.fr/sites/default/files/2020-10/202010_qpc2020_synthese_toulouse.pdf

      I wish professor Ziller would read my work on this topic before impugning my intelligence.

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