The vis compulsiva, also known as moral coercion or compulsive force, constitutes an institute that cuts across the branches of Civil and Criminal Law, characterized by psychological pressure or threats exerted upon a subject to compel them to perform a legal act or a typical conduct. Unlike vis absoluta (physical force), where the will is non-existent, in vis compulsiva the will is vitiated, as there remains a choice between submitting to the threat or facing the promised harm, which justifies its nature as a defect of consent in the private sphere and as a ground for excluding culpability in the criminal sphere.
1. Definition, Concept, and Legal Nature
In the rigor of legal technique, vis compulsiva is defined as relative or moral coercion. It involves the use of a grave and unjust threat against an individual, their family, or their assets, in a manner that instills a well-founded fear that compels them to enter into a legal transaction or commit a criminal offense. The core of this institute lies in the disturbance of the agent's self-determination.
Regarding its legal nature, the treatment is twofold:
- In Civil Law: It is classified as a defect of consent (or defect of will). An act performed under vis compulsiva is not void *ipso jure*, but voidable, since there was a manifestation of will, albeit a tainted one.
- In Criminal Law: It is configured as irresistible moral coercion. If the coercion is irresistible, it acts as a ground for excluding culpability (inexigibility of different conduct), keeping the act as typical and illicit, but exempting the agent from punishment. If it is resistible, it acts only as a mitigating circumstance.
2. Historical Origin and Evolution
The genesis of the institute dates back to Roman Law, specifically to the praetor's edict that introduced the actio quod metus causa. The Romans distinguished vis atrox (absolute physical violence) from metus (fear or moral coercion). The principle "coactus volui" (although coerced, I willed it) synthesized the classical view that the will, even if forced, existed, which justified the need for a rescissory action to annul the effects of the act.
In Comparative Law, the Napoleonic Code of 1804 consolidated coercion as a defect of consent, influencing the Brazilian Civil Code of 1916 and, subsequently, that of 2002. The doctrinal evolution migrated from a purely subjective analysis to one that weighs the objective gravity of the threat and the vulnerability of the coerced party.
3. Legal Provision and Requirements
The legal foundation of vis compulsiva in the Brazilian legal system is precise and rigorous:
3.1. Civil Sphere (Civil Code of 2002)
Articles 151 to 155 of the Civil Code regulate coercion. Art. 151 establishes the requirements for the configuration of the defect:
"Coercion, in order to vitiate the declaration of will, must be such that it instills in the patient a well-founded fear of imminent and considerable harm to their person, their family, or their assets."
The cumulative requirements are: (a) determinance (causality between coercion and act); (b) gravity of the harm; (c) imminence of the damage; (d) injustice of the threat; (e) considerable damage.
3.2. Criminal Sphere (Penal Code)
Article 22 of the Penal Code addresses irresistible moral coercion:
"If the act is committed under irresistible coercion or in strict obedience to an order, not manifestly illegal, from a hierarchical superior, only the author of the coercion or the order is punishable."
Here, vis compulsiva removes the reprovability of the conduct, transferring criminal responsibility to the coercer.
4. Practical Application and Jurisprudential Understanding
The application of vis compulsiva requires robust evidence; mere allegations of generic economic pressure or subsequent regret are not accepted.
4.1. Jurisprudence of the Superior Court of Justice (STJ)
The STJ has consolidated the understanding that the "regular exercise of a right" does not constitute coercion (Art. 153, CC). For example, the threat to protest a matured promissory note or to file an execution does not constitute vis compulsiva, as the element of "injustice" of the threat is missing. However, if the creditor uses this right to obtain excessive advantage unrelated to the debt, coercion may be recognized.
In REsp 1.255.431/RS, coercion in banking contracts was discussed, reiterating that reverential fear (fear of displeasing superiors or authority figures) does not vitiate consent.
4.2. Jurisprudence of the Superior Labor Court (TST)
In the labor field, vis compulsiva is frequently argued in requests for the nullity of resignation letters or settlement agreements. The TST understands that the threat of dismissal for just cause, when there is no serious misconduct to justify it, constitutes moral coercion, invalidating the act of contract termination.
5. Related Principles and Doctrinal Divergences
The institute dialogues directly with the Principle of Autonomy of Will and the Principle of Objective Good Faith. The classic doctrinal divergence lies in the measurement of "well-founded fear."
- Subjectivist School: Argues that the judge must consider the personal conditions of the victim (age, gender, health, temperament) to assess whether the threat was sufficient to coerce (adopted by Art. 152 of the CC).
- Objectivist School: Proposes a standard of the "average man" (bonus pater familias) to avoid the annulment of business deals due to exaggerated susceptibilities.
Modern doctrine, under the aegis of Human Dignity, tempers these views, applying the theory of trust to protect the stability of legal relations without abandoning the vulnerable party.
6. Contemporary Relevance and Practical Impacts
Vis compulsiva takes on new contours in the digital age. Sextortion and the use of algorithms for psychological pressure in electronic adhesion contracts are examples of new forms of moral coercion. In Corporate Law, the concept is essential for evaluating the validity of leniency agreements and plea bargains, where the line between legitimate State pressure and irresistible coercion is the subject of intense debate in Superior Courts.
In short, compulsive force remains a mechanism for controlling the soundness of legal acts, ensuring that freedom of choice, the foundation of the Democratic State of Law, is preserved against arbitrary incursions by third parties.
Legal and Jurisprudential References
- BRAZIL. Law No. 10.406, of January 10, 2002. Civil Code. Articles 151 to 155.
- BRAZIL. Decree-Law No. 2.848, of December 7, 1940. Penal Code. Article 22.
- BRAZIL. Superior Court of Justice. Special Appeal No. 1.255.431/RS. Rapporteur: Minister Maria Isabel Gallotti.
- BRAZIL. Superior Labor Court. RR-10115-32.2016.5.03.0031. Rapporteur: Minister Mauricio Godinho Delgado.
- PONTES DE MIRANDA, Francisco Cavalcanti. Treatise on Private Law. General Part, Volume IV.



