Theories of Legal Rights in Jurisprudence

Key Takeaways

• Theories of legal rights explain why a person is recognised as a right-holder and what function a legal right performs.
• The two principal theories of legal rights are the Will Theory, also called the Choice Theory, and the Interest Theory, also known as the Benefit Theory.
• The Will Theory considers a legal right as a sphere of choice or control given to the right-holder over the duties of others.
• The Interest Theory considers a legal right as an interest that is sufficiently important to justify imposing a corresponding duty upon another person.
• H.L.A. Hart is one of the most influential modern proponents of the Will Theory, while Joseph Raz developed one of the most influential modern versions of the Interest Theory.
• Rudolf von Ihering and John Salmond strongly influenced the interest-based understanding of legal rights. Salmond described a legal right as an interest recognised and protected by law.
• Neither the Will Theory nor the Interest Theory explains every legal right perfectly. Modern jurisprudence therefore also considers hybrid, status-based and multi-function approaches to rights.

What Are Theories of Legal Rights?

Theories of legal rights are jurisprudential explanations of the nature, purpose and foundation of legal rights. They attempt to answer a basic question: what makes something a legal right?

A legal system recognises several kinds of rights, including rights relating to property, contracts, personal liberty, constitutional protection, remedies and legal relationships. However, merely identifying these rights does not explain what they have in common.

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Jurisprudential theories attempt to determine whether a legal right exists primarily because it gives the holder choice and control, because it protects an important interest, or because it performs some other legal function.

The debate is therefore not simply about the definition of a right. It concerns the deeper function that rights perform within a legal system.

The two dominant theories are:

1. Will Theory or Choice Theory
2. Interest Theory or Benefit Theory

Contemporary jurisprudence generally treats these as the two principal competing theories concerning the function of rights.

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What Is a Legal Right?

A legal right may broadly be understood as an interest, claim, liberty, power or immunity recognised by law and attached to a legal person.

In many situations, a legal right corresponds with a legal duty. If one person has a legal claim against another, the second person ordinarily has a corresponding obligation.

For instance, when a borrower is legally required to repay money to a lender, the lender may possess a corresponding claim to repayment. Similarly, property rights may impose duties upon others not to unlawfully interfere with property.

John Salmond explained a legal right in the strict sense as an interest recognised and protected by a rule of legal justice. In his formulation, an interest becomes a legal right when the law protects it by imposing duties upon others.

This correlation between rights and duties forms an important foundation for understanding the major theories of legal rights.

What Is the Will Theory of Legal Rights?

The Will Theory of legal rights states that the essential function of a right is to provide the right-holder with a sphere of individual choice, freedom or control.

For this reason, the Will Theory is also commonly called the Choice Theory of Rights.

Under this approach, a person does not merely receive a benefit from the law. The important feature of the right is that the right-holder possesses some degree of control over the legal relationship.

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One of the most influential modern explanations of this theory was developed by H.L.A. Hart.

Hart described a right-holder as a type of “small-scale sovereign” over the duty owed to that person. The idea is that the person holding the right exercises normative control over the corresponding duty.

Central Idea of the Will Theory

According to the Will Theory, a right gives the holder control over another person’s duty.

Depending upon the particular legal relationship, the right-holder may possess the ability to:

• Demand performance: The holder may require the person under an obligation to perform the duty recognised by law.
• Enforce the duty: Where the legal system provides a remedy, the holder may approach the appropriate legal forum for enforcement.
• Waive the duty: In certain relationships, the holder may decide not to insist upon strict performance.
• Release the duty-bearer: Some obligations can be discharged with the consent of the person in whose favour they exist.
• Give consent: The right-holder may permit conduct that would otherwise amount to an interference with a protected interest.
• Transfer certain rights: Rights such as some proprietary and contractual rights may be transferable according to law.

The defining feature is therefore not merely that the right-holder benefits from the duty. What matters is the authority to determine how the legal relationship operates.

Example of the Will Theory

Contract law provides a useful illustration.

Suppose A promises under a valid contract to deliver certain goods to B. B possesses a contractual right against A.

Under a will-based understanding, B’s right is important because B possesses legal control concerning A’s obligation. Depending upon the applicable law and circumstances, B may enforce the contractual obligation, agree to modify it, waive certain performance or release A from the obligation.

Similar features can be seen in property law. An owner may generally decide whether another person may use the property, subject to restrictions imposed by law.

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The ability to make such choices makes private law particularly suitable for explaining the Will Theory.

Who Supported the Will Theory?

Different versions of will-based theories have appeared in jurisprudential thought.

Prominent thinkers associated with the Will Theory include:

Immanuel Kant

Kant’s philosophy strongly emphasised individual freedom and autonomy. The idea that rights protect a sphere within which an individual may exercise independent choice influenced later will-based theories of rights.

H.L.A. Hart

Hart provided one of the best-known modern formulations of the Will Theory. He emphasised that a right gives its holder control over the corresponding duty.

Hillel Steiner and Carl Wellman

Steiner and Wellman are among the modern jurists and philosophers who developed versions of will or choice-based theories.

The Will Theory consequently remains an important approach in analytical jurisprudence, particularly where legal rights involve control over legal relationships.

What Are the Advantages of the Will Theory?

The Will Theory explains several important characteristics of legal rights.

It Protects Individual Autonomy

The theory recognises that many rights exist to provide individuals with a protected sphere of decision-making.

Rights concerning property, contracts and personal liberty often allow the holder to determine whether and how particular legal relations will operate.

It Explains Waiver and Consent

A significant strength of the theory is its ability to explain why a right-holder may sometimes waive a right or consent to an act that would otherwise violate that right.

For example, property ownership normally permits the owner to decide whether another person may enter the property.

It Fits Many Private Law Rights

Contract, property, tort and trust relationships frequently give right-holders significant control over duties owed to them. The Will Theory therefore provides a particularly strong explanation of several private law rights.

What Are the Criticisms of the Will Theory?

The main difficulty with the Will Theory is that not every person capable of holding rights is capable of exercising meaningful legal choice.

Rights of Children

Children can possess legal rights even though they may not have the legal capacity to waive, transfer or personally enforce those rights.

The legal status of minors demonstrates that limited legal capacity does not necessarily mean an absence of legal rights. A theory that makes control or choice essential therefore faces difficulty explaining children’s rights.

Persons Without Decision-Making Capacity

Persons who lack the capacity to make particular legal decisions may still possess rights that the law must protect.

Their inability to exercise independent choice does not mean that their legal rights disappear.

Certain Rights Cannot Freely Be Waived

Some rights are protected in circumstances where the holder cannot simply release another person from the corresponding obligation.

This weakens the proposition that control over another’s duty is a necessary feature of every right.

The Will Theory therefore explains many rights effectively but struggles to provide a universal explanation of right-holding.

What Is the Interest Theory of Legal Rights?

The Interest Theory of legal rights states that the purpose of a right is to protect or advance an important interest of the right-holder.

It is sometimes described as the Benefit Theory, although modern interest theories are more sophisticated than the simple proposition that every benefit amounts to a right.

Under the Interest Theory, legal rights do not depend primarily upon the ability of the holder to make choices. Instead, the central question is whether an interest is sufficiently important to justify imposing a duty upon another person.

This theory has historically been associated with thinkers such as Jeremy Bentham and Rudolf von Ihering, while modern versions have been developed by scholars including Neil MacCormick, Joseph Raz and Matthew Kramer.

What Is Ihering’s Theory of Legal Rights?

Rudolf von Ihering is strongly associated with the interest-based conception of rights.

His approach treated rights as legally protected interests.

The central idea is that law exists not merely to protect abstract individual will but to protect interests that society and the legal system consider worthy of legal protection.

An interest by itself, however, is not necessarily a legal right. Legal recognition and protection are essential.

For example, a person may have an interest in the success of a business operated by a relative. That interest does not automatically create a legal right against other persons.

The interest becomes legally significant as a right only when the legal system protects it through legal duties, claims or remedies.

What Is Joseph Raz’s Interest Theory?

Joseph Raz developed one of the most influential modern formulations of the Interest Theory.

In broad terms, Raz argues that a person may have a right where an aspect of that person’s well-being provides a sufficient reason for holding another person under a duty.

The theory therefore contains two important ideas:

1. there must be an interest connected with the right-holder; and
2. that interest must be sufficiently important to justify a duty on another person.

This qualification is essential because everyday life contains countless interests that are not legal rights.

An interest becomes relevant to the theory of rights only when it has sufficient normative importance to support the imposition of an obligation.

What Are the Advantages of the Interest Theory?

The Interest Theory resolves several difficulties faced by the Will Theory.

It Explains the Rights of Children

A child may possess rights because important interests of the child require legal protection.

The ability to personally waive or enforce those rights is not necessary.

It Explains Protective Rights

Many rights exist principally to protect life, bodily integrity, welfare, dignity or other important interests.

The Interest Theory provides a natural explanation of such rights.

It Does Not Make Choice Essential

The theory recognises that legal rights may exist even where the right-holder cannot exercise independent control over the corresponding duty.

This allows the theory to accommodate a broader class of right-holders than strict versions of the Will Theory.

What Are the Criticisms of the Interest Theory?

The Interest Theory also faces important objections.

Every Interest Does Not Create a Right

Individuals have numerous interests, but the law does not convert every interest into a legal right.

The theory must therefore explain when an interest becomes sufficiently important to justify a corresponding duty.

Some Rights May Serve Wider Interests

A legal right held by one person may sometimes be justified partly by the interests of other persons or society generally.

One frequently discussed example in jurisprudential literature concerns the protection of journalists’ sources. The justification for such protection may involve not only the journalist’s personal interest but also the wider public interest in an independent media.

This creates difficulties for versions of the theory that require the right-holder’s own interest to provide the sufficient justification.

Rights Can Exist Despite Limited Personal Benefit

Legal systems may sometimes recognise rights that do not necessarily improve the holder’s welfare in every particular situation.

This creates another difficulty for theories attempting to explain all legal rights solely through individual well-being.

What Is Salmond’s Theory of Legal Rights?

John Salmond’s explanation of legal rights is closely connected with the Interest Theory.

Salmond described a legal right as an interest recognised and protected by a rule of legal justice.

The important elements are therefore:

• Existence of an interest: There must be an interest capable of receiving legal recognition.
• A recognised right-holder: The interest must belong to a person or entity recognised by law as capable of holding rights.
• Recognition by law: A merely personal, social or moral interest does not become a legal right unless the legal system recognises it.
• Legal protection: The recognised interest must receive protection through corresponding legal duties or remedies.

Salmond’s formulation was influenced by the interest-based approach associated with Ihering.

Salmond also distinguished rights in the strict sense from broader legal advantages such as liberties, powers and immunities. His analytical treatment contributed significantly to later discussions concerning the precise structure of legal relations.

Is Hohfeld’s Theory a Theory of Legal Rights?

Wesley Newcomb Hohfeld’s analysis is extremely important to the study of legal rights, but it should not be confused with the Will Theory or Interest Theory.

Will and Interest theories attempt to explain what function rights perform.

Hohfeld’s analysis of legal rights primarily attempts to explain the structure of legal relations.

He identified four major legal positions:

For example, when A has a claim-right against B, B has a corresponding duty towards A.

Hohfeld’s framework helps prevent the word “right” from being used vaguely for several different legal positions.

Modern Will and Interest theories frequently use Hohfeldian concepts when analysing the structure and function of rights.

Difference Between Will Theory and Interest Theory

The main difference between the Will Theory and Interest Theory lies in what each considers the essential function of a legal right.

The two theories therefore approach the same concept from different perspectives.

The Will Theory asks: What control does the right give the holder?

The Interest Theory asks: What interest of the holder does the right protect?

Are There Other Theories of Rights?

Modern jurisprudence has developed several approaches beyond the traditional Will-Interest debate.

Hybrid Theories

Hybrid theories attempt to combine elements of both autonomy and interests.

They recognise that some rights protect choice, while others primarily protect important interests.

Multi-Function Theories

Multi-function approaches challenge the assumption that every right must perform the same function.

Different rights may serve different purposes. A contractual right may protect choice, while a child’s right may primarily protect welfare.

Status-Based Approaches

Some theories explain rights in terms of the right-holder’s status, standing or position in relation to other persons.

Under such approaches, rights may express the idea that a person is entitled to make claims against others because of the person’s normative or legal standing.

These newer approaches reflect the continuing difficulty of explaining all rights through a single principle.

Why Are Theories of Legal Rights Important?

Theories of legal rights are important because rights form one of the basic building blocks of jurisprudence.

They help explain:

• Rights and duties: They clarify why a legal right held by one person may impose a corresponding legal duty upon another.
• Protection of interests: They help identify why certain interests receive legal protection while ordinary expectations and benefits do not.
• Waiver of rights: They explain why some rights can be waived or modified by their holders while other rights receive stronger legal protection.
• Legal capacity: They assist in explaining how children and persons with limited decision-making capacity can still possess legally protected rights.
• Different branches of law: They provide a theoretical foundation for understanding rights in contract, property, tort and constitutional law.
• Constitutional protections: The theoretical understanding of rights also helps in studying legally enforceable protections such as the Fundamental Rights under the Constitution.
• Different legal positions: They help distinguish legal rights from mere benefits, expectations, liberties, powers and immunities.

The debate also demonstrates an important feature of jurisprudence: concepts that appear simple in ordinary language often become considerably more complex when their legal structure is examined closely.

Conclusion

The theories of legal rights seek to explain the nature and function of rights within a legal system. The two dominant approaches are the Will Theory and the Interest Theory.

The Will Theory regards a right primarily as a sphere of choice and control. It explains particularly well those legal relationships in which the right-holder may enforce, waive or modify obligations. However, its emphasis on choice makes it difficult to explain the rights of children and others who may lack the capacity to exercise such control.

The Interest Theory regards rights as protections for sufficiently important interests. It provides a broader explanation of protective rights and rights held by persons who cannot independently exercise them. Its principal difficulty lies in determining which interests are important enough to generate rights and corresponding duties.

Ihering and Salmond played major roles in developing the interest-based understanding of rights, while H.L.A. Hart and Joseph Raz provided influential modern formulations of the competing Will and Interest approaches. Hohfeld, meanwhile, contributed a separate but highly important analytical framework for understanding the structure of legal relationships.

No single theory provides an uncontested explanation of every legal right. The continuing debate between autonomy, interest, status and multi-function approaches shows that the concept of a legal right remains one of the most fundamental and intellectually significant subjects in jurisprudence.

Note: This article was originally written by Shanu chandwasia (3rd year student of B.A. LL.B. (Hons.) at Amity University, Kolkata) and published on 03 March 2020. It was subsequently updated by the LawBhoomi team on 07 September 2026.