Special Duties — Apply duties based on relationships

Historical Context & Motivation

Anglo-American tort law has long grappled with a foundational tension: the no-duty-to-rescue rule. Under traditional common law, a bystander who witnessed a stranger drowning in shallow water bore no legal obligation to extend a hand, no matter how easy the rescue might have been. This principle, rooted in the libertarian ethos of individual autonomy, drew a sharp line between misfeasance—causing harm through affirmative conduct—and nonfeasance—a mere failure to act. Over the course of several centuries, courts began to recognize that certain pre-existing relationships between parties created moral and practical imperatives that justified carving out exceptions to this baseline rule. These exceptions coalesced into the doctrine of special duties, which imposed affirmative obligations on parties whose relationship to the plaintiff gave rise to dependence, control, or reliance.

The central question these developments address is straightforward yet profound: When does the nature of the relationship between two parties transform a moral obligation into a legal one? Answering this question requires examining the rationale for each recognized special relationship category, the scope of the duty imposed, and the consequences of breach. For bar exam purposes, the ability to identify these relationships and apply the correct standard of care is essential to a strong torts performance.

Core Principles & Definitions

At common law, tort liability generally requires that the defendant owe a duty of care to the plaintiff, breach that duty, and thereby cause legally cognizable harm. The default rule—sometimes called the no-duty rule—provides that absent a pre-existing relationship or other triggering circumstance, a person has no affirmative obligation to protect or aid another. Special duties arise as exceptions to this default, grounded in policy considerations of dependence, vulnerability, and the defendant's superior ability to prevent harm. The following principles organize the doctrine.

Visual Explanation — The Duty Spectrum

As the diagram illustrates, the critical move on a bar exam question is determining where on this spectrum the parties' relationship falls. A stranger who merely witnesses danger owes no duty at all. A person who has voluntarily undertaken to aid another may owe an ordinary duty of reasonable care once that undertaking begins. But when the parties occupy one of the recognized special relationship categories, the duty transforms into an affirmative obligation to protect, warn, or render aid, regardless of whether the defendant's own conduct created the danger. Understanding this structure allows you to spot the issue quickly and frame a precise analysis.

How Special Duties Operate — The Analytical Framework

Analyzing a special duty question on the bar exam requires a structured approach. The doctrine does not operate through a single formula, but rather through a multi-step inquiry that assesses the nature of the relationship, the scope of the resulting duty, the reasonableness of the defendant's conduct, and the causal link between the breach and the plaintiff's harm. The following framework captures this logic.

Step 1 — Identify the Relationship

The threshold question is whether the parties share one of the recognized special relationships. Under Restatement (Third) of Torts § 40, these include: (a) a common carrier with its passengers; (b) an innkeeper with its guests; (c) a business or other possessor of land that holds its premises open to the public, with those who are lawfully on the premises; (d) an employer with its employees when the employment relationship arises within the scope of employment; (e) a school with its students; (f) a landlord with its tenants; and (g) a custodian with those in its custody. Some jurisdictions also recognize the Tarasoff duty owed by mental health professionals to identifiable third parties threatened by a patient.

Step 2 — Define the Scope of the Duty

Once a special relationship is identified, the next inquiry concerns the scope of the duty. The duty generally extends to protecting the dependent party from foreseeable risks, including risks created by third parties or by the plaintiff's own condition. For example, a common carrier must protect passengers not only from its own negligence but also from assaults by fellow passengers or intruders. The duty does not, however, require the defendant to guarantee safety absolutely; it requires the exercise of reasonable care under the circumstances. Historically, some jurisdictions imposed a heightened standard on common carriers and innkeepers (i.e., the 'highest degree of care'), though the modern trend follows the Restatement in applying a reasonableness standard calibrated to the vulnerability inherent in the relationship.

Step 3 — Assess Breach

Breach is evaluated by asking whether the defendant took reasonable steps consistent with the duty imposed by the relationship. In the special duty context, this analysis often focuses on omissions rather than affirmative acts: Did the employer fail to provide a safe workplace? Did the school fail to supervise students during a known period of danger? Did the custodian fail to seek medical attention for a ward in distress? The reasonableness inquiry accounts for the foreseeability of the harm, the burden of precautionary measures, and the severity of the potential injury.

Step 4 — Causation and Damages

As with any negligence action, the plaintiff must establish both actual cause (but-for causation or substantial factor) and proximate cause (the harm was within the scope of the risk that made the defendant's conduct negligent). In special duty cases, causation can be complicated because the plaintiff must show that the defendant's failure to act—rather than the actions of a third party or an independent cause—was the proximate cause of the injury. For instance, in a school-student case, the plaintiff must demonstrate that the school's failure to supervise was a substantial factor in bringing about the student's injury, not merely that the injury occurred on school grounds.

Detailed Breakdown of Special Relationship Categories

Each recognized special relationship category has distinct characteristics, a particular rationale, and specific applications that appear frequently on the bar exam. The following table provides a detailed comparison, and the diagram below maps the flow of analysis from relationship identification through duty definition.

Worked Example — School-Student Duty

Consider the following fact pattern, which illustrates the special duty framework in operation. Pay close attention to how each analytical step maps onto the facts.

Distinguishing Special Duties from Other Duty Exceptions

Special duties based on relationships are one of several exceptions to the no-duty-to-rescue rule. Bar exam questions frequently test your ability to distinguish among these exceptions, particularly when a fact pattern could implicate more than one. The following table clarifies the boundaries.

Connection to Advanced Theory — Expanding the Catalogue

The list of recognized special relationships is not static. Modern courts continue to wrestle with whether new types of relationships warrant the imposition of affirmative duties, and the Restatement (Third) has signaled a willingness to expand the catalogue based on evolving social norms. Understanding the trajectory of this doctrine is important both for the bar exam, which sometimes tests cutting-edge issues, and for practice, where emerging duties can alter the landscape of tort litigation.

The overarching trend is toward a more functional analysis that looks beyond formal labels to the underlying characteristics of the relationship. Rather than asking 'Is this an innkeeper-guest relationship?', modern courts increasingly ask 'Does this relationship exhibit the kind of dependence, vulnerability, and entrusted control that justifies imposing an affirmative duty?' This functional approach makes the doctrine more flexible but also less predictable, which is precisely the kind of ambiguity that bar examiners like to test. When confronting a novel fact pattern, argue both sides: that the relationship does or does not satisfy the core criteria, and explain why the policy considerations underlying the doctrine support your conclusion.

Practice Problems

Special Duties — Summary Review