The Cannabis Decision (BVerfGE 90, 145): Proportionality and Criminalisation

The Cannabis Decision (BVerfGE 90, 145, 9 March 1994) is a significant judgment of the Federal Constitutional Court on the proportionality of criminal penalties for the possession and use of cannabis. The Court addressed whether the criminalisation of cannabis under the Narcotics Act (Betäubungsmittelgesetz, BtMG) violated fundamental rights, including the general freedom of action, the right to health, and the principle of proportionality. The decision established important principles for the review of criminal legislation under the Grundgesetz.

The Facts

The complainants were individuals convicted of or charged with offences under the Narcotics Act for the possession, cultivation, or distribution of cannabis. They argued that the criminalisation of cannabis was disproportionate because cannabis was less harmful than alcohol and tobacco, which were legal. They contended that the criminal law should not interfere with personal decisions about the use of substances that did not cause significant harm to others and that the state could not justify the criminalisation of cannabis on the basis of unproven assumptions about its dangers.

The General Freedom of Action

The Court held that the possession and consumption of cannabis falls within the protection of the general freedom of action (allgemeine Handlungsfreiheit) under Article 2(1) GG. The freedom to decide what substances to consume is an aspect of personal autonomy that is constitutionally protected. However, Article 2(1) GG may be restricted by statutes that are formally and materially compatible with the constitution. The Narcotics Act was a formally valid federal statute, so the central question was whether the criminalisation of cannabis was materially compatible with the constitution, particularly with the principle of proportionality.

The Right to Health

The Court also addressed the right to health under Article 2(2) GG, which protects the right to life and physical integrity. The complainants argued that the criminalisation of cannabis violated their right to make decisions about their own health and that the state could not justify criminalisation based on health concerns when other substances of comparable or greater harm were legal. The Court held that the state has a legitimate interest in protecting the health of its citizens and that this interest may justify restrictions on the use of substances that pose health risks. The right to health does not give individuals an unconditional right to use substances of their choice; the state may regulate or prohibit substances that it considers harmful, subject to the principle of proportionality.

The Proportionality Review

The Court applied a detailed proportionality analysis (Verhältnismäßigkeitsprüfung) to the criminalisation of cannabis. The Court examined whether the criminalisation served a legitimate purpose, whether it was suitable to achieve that purpose, whether less restrictive alternatives were available, and whether the burden imposed on individuals was disproportionate to the benefits of criminalisation. The Court recognised that cannabis use posed health risks, particularly for young people and for individuals with pre-existing mental health conditions. However, the Court also noted that the health risks of cannabis were not as well established as the risks of other legal substances such as alcohol and tobacco.

The De Minimis Principle

The central holding of the Cannabis Decision is that the criminalisation of cannabis is proportionate in principle but that the criminal law must respect the de minimis principle (Geringfügigkeitsprinzip). The prosecution of minor, non-commercial cannabis offences that do not involve significant quantities or threats to public health may be disproportionate. The Court held that the prosecuting authorities must exercise discretion to refrain from prosecuting cases involving small quantities of cannabis for personal use where no specific health risks or public order concerns are present. The Court did not require the decriminalisation of cannabis but held that the application of the criminal law must be proportionate to the gravity of the offence.

The Legislative Discretion

The Court recognised that the legislature enjoys broad discretion (Einschätzungsspielraum) in assessing the dangers of substances and in determining the appropriate criminal law response. The Court would not substitute its own assessment of the health risks of cannabis for that of the legislature, as long as the legislative assessment was not manifestly unreasonable. The Court found that the legislature’s decision to criminalise cannabis was not manifestly unreasonable, given the recognised health risks and the international obligations of Germany under the Single Convention on Narcotic Drugs. However, the Court required the legislature to keep the criminalisation of cannabis under review and to reassess the proportionality of criminalisation if new evidence emerged about the relative harms of cannabis compared to legal substances.

The Outcome and Subsequent Developments

The Court upheld the criminalisation of cannabis in principle but required the prosecuting authorities to respect the de minimis principle. The decision led to the adoption of guidelines for the prosecution of cannabis offences in most German Länder, specifying the quantity of cannabis below which prosecution would not be pursued in the absence of aggravating factors. In the years following the decision, several Länder introduced administrative reforms that effectively decriminalised the possession of small quantities of cannabis for personal use. In 2022, the German government announced plans for the regulated legalisation of cannabis for recreational use, which was implemented through the Cannabisgesetz (CanG) of 2024, reflecting a fundamental reassessment of the proportionality of cannabis criminalisation.

Significance

The Cannabis Decision is an important authority on the proportionality of criminal legislation under the Grundgesetz. The decision established that the criminal law must respect the principle of proportionality in the choice of offences and penalties, that the de minimis principle applies to criminal offences involving substances of moderate harm, and that the legislature must keep criminal prohibitions under review in light of evolving scientific evidence. The decision has influenced subsequent cases on the criminalisation of other substances and has contributed to the growing recognition that the criminal law should be reserved for conduct that causes significant harm to others.