State Liability for Omissions: When Failing to Act Creates a Duty to Compensate

This page is a translation of the original Portuguese text, provided for convenience. It deals with Brazilian law. If there is any discrepancy, the Portuguese version prevails. Read the original in Portuguese

The State’s liability for harm that stems from its own inaction is one of the most delicate areas of administrative law. When the loss results not from an act but from an omission by the government, the way courts determine the duty to compensate changes, and so does the proof required from anyone seeking redress.

Action and omission: why the distinction matters

Article 37, paragraph 6, of the Constitution provides that public-law entities are liable for damage their agents cause to third parties. The rule embodies what is known as the administrative risk theory: the victim only needs to prove the agent’s conduct, the harm, and the causal link between the two, without having to show fault. This framework fits naturally with acts of commission, where the State acts and, in acting, causes the harm.

The problem arises when the harm comes not from an action but from the absence of one. It was not the State that ran over the pedestrian; it was the lack of signage. It was not an agent who injured the citizen; it was the failure to watch over a public facility. In cases like these, legal scholars and courts debate whether liability remains strict (no-fault) or instead depends on showing a failure in the operation of the service.

The answer has enormous practical consequences. Deciding which regime applies means deciding what the victim must prove in court. Under one, the link between the omission and the harm is enough. Under the other, the victim must go further and show that the public service did not work, worked poorly, or worked too late, when there was a concrete duty for it to work.

The service-failure standard

The most influential approach to the subject borrowed from French law the notion of faute du service, translated as service failure. Through this lens, a State omission creates a duty to compensate only when the service that should have existed was not provided, was provided deficiently, or arrived too late. The fault here is not that of an identifiable agent but an anonymous fault, attributed to the administrative machinery as a whole.

Under this approach, liability for omission is classified as fault-based, because it requires proof of a defect in the State’s performance. It is not about the individual fault of a particular public employee, but about finding that the public apparatus failed to meet a standard of conduct that was expected of it. The central question is no longer just whether there was harm, but whether the State failed where it had a duty not to fail.

This standard is not uniform for every omission. More recent case law has begun to separate specific omissions from generic ones. In the first, the State had a concrete, individualized duty to act in a given situation, and its inaction comes close to being a true cause of the harm. In the second, the failure is diffuse, tied to the general duty to provide services to the community, and establishing causation becomes more demanding.

The distinction takes on its own shape in custodial situations. When the government assumes direct control over people or property, as with prisoners in correctional facilities or students under a school’s care, the prevailing view is that the duty of protection is heightened. An omission in that context tends to trigger strict liability, because the State controlled the situation and had a specific duty to protect the physical integrity of those in its care.

This separation is not merely theoretical. It shifts the burden of proof and, in practice, decides who wins. Once a specific omission is recognized, the treatment moves closer to that given to acts of commission, and the victim benefits from a shorter evidentiary path. If the omission is treated as generic, the injured party must describe the service failure in detail.

It was not an agent who injured the citizen; it was the failure to watch over a public facility.

What the injured party must show

Whichever view is adopted, some elements are common to any claim for redress based on State omission. The first is the existence of a legal duty to act. Without a rule, a duty of care, or a concrete situation that required the government to act, there is no legally relevant omission, only the absence of conduct the law did not demand.

The second element is harm. The victim must prove a certain and specific loss, whether financial or non-financial, and not a mere expectation or inconvenience. The third is a causal link between the State’s inaction and the harmful result. This is often the hardest point, because an omission does not create harm on its own: it allows another cause to produce it, which requires showing that the action that was due would have prevented the loss.

When the fault-based regime applies, proof of the service failure is added to these requirements. The injured party must show that an enforceable standard of conduct existed and that the State fell short of it. Reports, records of unanswered calls, a history of ignored complaints, and technical expert reports are often decisive in showing how the service failed to work as it should have.

Another sensitive point is identifying the responsible entity. The omission may be attributable to the Union (the federal government), a state, a municipality, or entities of the indirect administration, depending on who is responsible for the failed service. Filing the claim against the correct entity, and sometimes against more than one when responsibilities overlap, avoids dismissal of the case because the wrong party was sued and preserves the effectiveness of any future compensation.

Limits and exclusions of liability

The duty to compensate is neither automatic nor unlimited. The administrative risk theory, which governs acts of commission, recognizes causes that break the causal link and rule out liability, such as the victim’s sole fault, the act of a third party, and force majeure. These same factors are invoked in cases of omission to show that the result did not stem from the State’s inaction but from circumstances unrelated to the conduct expected of the government.

There is also the reserva do possível argument (the “available resources” defense), which State defendants often raise to justify the material impossibility of providing a given service perfectly. The argument, however, is not a blanket excuse: courts tend to reject it when the omission affects an essential core of rights or when the failure results from administrative disorganization rather than a genuine shortage of resources. The analysis is always case-specific, weighing what could reasonably be expected under the circumstances.

For the lawyer representing the injured party, strategy begins with correctly characterizing the omission. Showing that the case involves a specific duty to act, and not just a generic failure, tends to move the case toward strict liability and lighten the burden of proof. The government’s defense, by contrast, usually argues that the omission is generic and that exclusions apply, seeking to break the link between the inaction and the harm suffered.

Frequently Asked Questions

Is State liability for omission strict or fault-based?

It depends on the type of omission. The traditional view treats liability for omission as fault-based, requiring proof of a service failure. More recent case law, however, recognizes strict liability when there is a specific omission, that is, a concrete and individualized duty to act, especially in custodial situations, where the State has direct control over the protected person or property.

What does service failure mean?

It is a finding that the public service that should have existed was not provided, was provided deficiently, or arrived too late. It is an anonymous fault, attributed to the administration as a whole and not to an identifiable public employee. Proving this failure is the heart of claims based on omissions subject to the fault-based regime.

What evidence helps show State omission?

Documents showing the duty that was breached and the defect in the service are the most valuable. Records of unanswered requests, complaint filings, prior notices to the government, technical expert reports, and proof of the harm suffered make up the body of evidence that connects the inaction to the loss. The more concretely you can show that the action that was due would have prevented the result, the greater the chance of success.

As informações deste artigo são de caráter informativo e não substituem consulta jurídica individualizada. Cada caso possui particularidades que exigem análise específica.