Delegated legislation refers to law made by an authority other than the legislature itself under powers delegated to it by the legislature. It has become an essential part of modern government because legislatures cannot practically formulate every technical, detailed and frequently changing rule required for administration.

The concept exists in the United Kingdom, United States and India, but the constitutional basis and methods of control differ because the three countries have different systems of government and constitutional structures.

In the UK, delegated legislation operates within the framework of Parliamentary Sovereignty. In the USA, administrative rule-making is closely connected with delegation of legislative authority, separation of powers and the Administrative Procedure Act. In India, delegated legislation operates under the Constitutional framework of legislative power and the doctrine against excessive delegation.

Meaning of Delegated Legislation

Delegated legislation is legislation made by an authority exercising power delegated by the legislature.

The legislature generally establishes the basic policy or legal framework and authorises another authority to formulate detailed rules.

The authority receiving the power may include:

• A Minister;
• Government department;
• Local authority;
• Administrative agency;
• Regulatory authority; or
• Other statutory body.

For example, Parliament may enact a statute establishing a regulatory framework and authorise a Minister to make rules prescribing detailed procedures.

Need for Delegated Legislation

Modern governments deal with highly technical and specialised subjects.

Delegated legislation is necessary because:

• Legislatures have limited time;
• Modern legislation is technically complex;
• Experts may be required to formulate detailed rules;
• Administrative requirements may change frequently;
• Local conditions may require different rules;
• Emergency situations may require rapid action; and
• Detailed matters cannot practically be included in every primary statute.

Delegated legislation therefore allows the legislature to establish the framework while specialised authorities formulate the necessary details.

Delegated Legislation and Separation of Powers

Delegated legislation raises an important constitutional question because the power to make law traditionally belongs to the legislature.

The issue is therefore how much law-making authority can constitutionally be transferred to the executive or administrative authorities.

The answer differs among the three jurisdictions.

United Kingdom

Parliament is sovereign and may delegate legislative authority through statutes.

United States

Delegation is constrained by the Constitution’s allocation of legislative power to Congress and the nondelegation doctrine.

India

Parliament and State Legislatures may delegate subordinate legislative functions, but they cannot delegate their essential legislative functions.

Delegated Legislation in the United Kingdom

The UK has one of the most extensive systems of delegated legislation.

Parliament frequently authorises ministers, departments, local authorities and other public bodies to make detailed rules.

Constitutional Basis

The principal constitutional foundation is Parliamentary Sovereignty.

Parliament may enact a statute delegating rule-making authority to another body.

The delegated authority must, however, remain within the limits established by the parent Act.

Delegated legislation therefore derives its legal validity from the enabling statute.

Forms of Delegated Legislation in the UK

Common forms include:

• Statutory instruments;
• Orders in Council;
• By-laws;
• Regulations;
• Rules; and
• Schemes.

Statutory Instruments

Statutory instruments are the most common form of delegated legislation made by ministers and certain other authorities under powers granted by Acts of Parliament.

The Statutory Instruments Act 1946 provides an important framework for their publication and parliamentary scrutiny.

Orders in Council

Orders in Council are formal instruments made by the King in Council.

They may be made under:

• Statutory authority; or
• Certain prerogative powers.

The legal basis and effect of a particular Order in Council depend upon the power under which it is made.

By-Laws

Local authorities and certain public bodies may make by-laws concerning matters within their statutory authority.

Parliamentary Control in the UK

Parliament exercises control over delegated legislation through several mechanisms.

The principal procedures for statutory instruments include:

Negative Resolution Procedure

An instrument generally becomes law unless Parliament annuls it within the prescribed period.

Affirmative Resolution Procedure

The instrument requires parliamentary approval before it can take effect.

Super-Affirmative Procedure

Certain instruments are subject to a more detailed scrutiny procedure, allowing Parliament greater involvement in their formulation.

The exact procedure depends upon the enabling legislation.

Judicial Control in the UK

Courts may review delegated legislation to determine whether the delegated authority has acted within the powers granted by Parliament.

If an authority exceeds its statutory power, the delegated legislation may be declared unlawful.

This is an application of the ultra vires doctrine.

Substantive Ultra Vires

Delegated legislation is substantively ultra vires when it goes beyond the authority granted by the parent statute.

For example, if Parliament authorises a minister to regulate licensing procedures but the minister creates an entirely new substantive prohibition without statutory authority, the measure may be challenged as ultra vires.

Procedural Ultra Vires

Delegated legislation may also be invalid where the authority fails to comply with a mandatory procedure imposed by the enabling Act.

For example, where consultation is expressly required as a condition of making regulations, failure to comply may make the legislation unlawful.

Important UK Cases

R v. Bouchard (1831)

Early judicial approaches to delegated legislative power demonstrated the principle that subordinate authorities must remain within the powers conferred upon them.

Institute of Patent Agents v. Lockwood (1894)

The case is important in the development of judicial control over delegated legislative power and the principle that delegated authority cannot exceed the statutory power granted to it.

R v. Secretary of State for Social Security, ex parte Joint Council for the Welfare of Immigrants (1997)

The case illustrates judicial scrutiny of subordinate legislation and the importance of statutory authority.

Advantages in the UK

Delegated legislation provides:

• Administrative flexibility;
• Technical expertise;
• Speed;
• Detailed regulation;
• Local adaptability; and
• Ability to respond to changing circumstances.

Problems in the UK

Potential concerns include:

• Excessive delegation;
• Limited parliamentary scrutiny;
• Executive dominance;
• Complexity;
• Difficulty for citizens in identifying applicable rules; and
• Risk of administrative overreach.

Delegated Legislation in the United States

The American approach is shaped by separation of powers and the constitutional allocation of legislative power to Congress.

Federal administrative agencies frequently make regulations under authority granted by Congress.

Constitutional Basis

Article I, Section 1 of the US Constitution provides that legislative powers are vested in Congress.

This creates the constitutional foundation for the nondelegation doctrine.

The basic question is how far Congress can authorise executive agencies to fill in the details of federal law without transferring legislative power in an unconstitutional manner.

Administrative Rule-Making

US federal agencies make regulations dealing with areas such as:

• Environmental protection;
• Securities;
• Communications;
• Labour;
• Public health;
• Transportation;
• Consumer protection; and
• Financial regulation.

These rules may have significant legal effects.

Administrative Procedure Act, 1946

The Administrative Procedure Act (APA) provides the principal general federal framework for administrative rule-making.

It establishes procedures governing many forms of agency action.

For rule-making, the APA generally provides for:

1. Publication of proposed rules;
2. Public participation;
3. Submission of comments;
4. Agency consideration of relevant comments; and
5. Publication of final rules.

This is commonly known as notice-and-comment rule-making.

Notice-and-Comment Rule-Making

Notice-and-comment procedure allows members of the public, businesses, organisations and other affected parties to participate in the regulatory process.

The process is intended to improve:

• Transparency;
• Accountability;
• Technical quality;
• Public participation; and
• Reasoned administrative decision-making.

Certain categories of rules are exempt from ordinary notice-and-comment requirements under the APA.

Nondelegation Doctrine

The nondelegation doctrine limits Congress’s ability to transfer legislative power.

The Supreme Court has generally allowed Congress to delegate authority where legislation provides an adequate guiding principle.

J.W. Hampton, Jr. & Co. v. United States (1928)

The Supreme Court established the intelligible principle approach.

Congress may delegate authority when it provides an intelligible principle to guide the exercise of delegated power.

The doctrine has historically been applied relatively narrowly.

Panama Refining Co. v. Ryan

Panama Refining Co. v. Ryan (1935)

The Supreme Court invalidated a delegation of authority because Congress had not provided sufficient guidance for the exercise of the delegated power.

The case demonstrated that delegation could be constitutionally invalid where Congress failed to establish adequate standards.

A.L.A. Schechter Poultry Corp. v. United States

A.L.A. Schechter Poultry Corp. v. United States (1935)

The Supreme Court struck down provisions of the National Industrial Recovery Act involving an excessive delegation of legislative authority.

The decision remains a leading historical authority on the nondelegation doctrine.

Modern Nondelegation Doctrine

After the 1930s, the Supreme Court generally adopted a more permissive approach to congressional delegation.

The intelligible-principle standard has allowed Congress to confer substantial regulatory authority on administrative agencies.

Nevertheless, nondelegation remains constitutionally relevant.

Major Questions Doctrine

The major questions doctrine has become particularly important in recent US Administrative Law.

It concerns significant agency assertions of regulatory authority where Congress has not clearly authorised the agency to exercise such power.

West Virginia v. Environmental Protection Agency (2022)

The Supreme Court applied the major questions doctrine in reviewing the Environmental Protection Agency’s authority concerning greenhouse-gas emissions.

The Court required clear congressional authorisation for certain extraordinary exercises of administrative power.

The doctrine has become an important consideration when examining the limits of delegated administrative authority.

Judicial Control of Delegated Legislation in the USA

Federal courts may review agency regulations for:

• Exceeding statutory authority;
• Procedural defects;
• Constitutional violations;
• Arbitrary and capricious decision-making;
• Failure to comply with statutory requirements; and
• Other recognised grounds of judicial review.

The APA provides an important statutory framework for such review.

Loper Bright and Agency Interpretation

Loper Bright Enterprises v. Raimondo (2024)

The Supreme Court overruled the historical Chevron framework for judicial deference to agency interpretations of ambiguous statutes.

Courts must now exercise their own independent judgment in interpreting statutes rather than deferring to an agency merely because the statutory language is ambiguous.

This has implications for delegated legislation because the meaning and scope of the statutory authority granted to agencies are ultimately determined through judicial interpretation rather than automatic Chevron deference.

Delegated Legislation in India

India permits delegated legislation as a practical necessity of modern administration.

Parliament and State Legislatures frequently authorise the executive and other bodies to make rules, regulations, notifications and bye-laws.

However, delegated legislation remains subject to constitutional and judicial limitations.

Constitutional Basis

The Constitution does not contain a single comprehensive provision specifically governing delegated legislation.

Its validity is derived from the legislative powers of Parliament and State Legislatures and the constitutional structure governing delegation.

Articles such as:

• Article 245;
• Article 246;
• Article 309;
• Article 312; and
• Various subject-specific statutory provisions

may provide authority for different forms of subordinate legislation.

The essential principle is that the legislature cannot completely surrender its legislative function.

Essential Legislative Functions

Indian constitutional law distinguishes between:

• Essential legislative functions; and
• Details that may be delegated.

The legislature must determine the legislative policy and essential standards.

The executive or other subordinate authority may then be authorised to work out the details.

In re Delhi Laws Act

In re Delhi Laws Act, 1912 (1951)

This is the leading Indian constitutional decision on delegated legislation.

The Supreme Court considered the limits of legislative delegation.

The Court accepted that delegation is constitutionally permissible but held that the legislature cannot abdicate or surrender its essential legislative function.

The legislature must determine the policy and legislative standard, while subordinate authorities may fill in details.

Excessive Delegation

Delegation becomes constitutionally problematic when the legislature transfers its essential legislative function without adequate guidance.

Examples may include situations where the legislature:

• Provides no meaningful policy;
• Provides no adequate standard;
• Gives unrestricted law-making power; or
• Effectively transfers its entire legislative function.

The doctrine is intended to preserve the constitutional role of the legislature.

Types of Delegated Legislation in India

Common forms include:

• Rules;
• Regulations;
• Notifications;
• Orders;
• Schemes;
• Bye-laws;
• Circulars; and
• Directions where legally authorised.

The legal status of each instrument depends upon the source of authority and the governing statute.

Parliamentary Control in India

Parliament exercises control through:

• Laying procedures;
• Parliamentary debates;
• Questions;
• Discussions;
• Committees; and
• The Committee on Subordinate Legislation.

The Committee on Subordinate Legislation examines whether delegated legislation remains within the authority delegated by Parliament.

State legislatures have corresponding mechanisms for subordinate legislation made under State laws.

Judicial Control in India

Indian courts may review delegated legislation on several grounds.

These include:

• Substantive ultra vires;
• Procedural ultra vires;
• Excessive delegation;
• Violation of Fundamental Rights;
• Violation of constitutional provisions;
• Conflict with the parent Act; and
• Lack of jurisdiction.

Substantive Ultra Vires

Delegated legislation is substantively ultra vires where it exceeds the substantive authority granted by the parent statute.

The delegated legislation cannot contradict or go beyond the enabling Act.

Procedural Ultra Vires

Procedural ultra vires occurs where a mandatory statutory procedure for making delegated legislation has not been followed.

The consequences depend upon whether the procedural requirement is mandatory or directory.

Delegated Legislation and Fundamental Rights

Delegated legislation is subject to the Constitution.

Therefore, subordinate legislation may be challenged where it violates Fundamental Rights.

Article 14 is particularly significant in cases involving:

• Arbitrariness;
• Discrimination;
• Unreasonable classification; or
• Unreasonable administrative regulation.

Other Fundamental Rights may also apply depending upon the subject matter.

Delegated Legislation and Judicial Review

Indian courts exercise judicial review to ensure that subordinate legislation remains within constitutional and statutory boundaries.

Indian Express Newspapers (Bombay) Pvt. Ltd. v. Union of India (1985)

The Supreme Court recognised that subordinate legislation can be challenged on recognised constitutional and administrative-law grounds.

The case is important for understanding judicial review of delegated legislation.

State of Tamil Nadu v. P. Krishnamurthy (2006)

The Supreme Court discussed the grounds on which subordinate legislation may be challenged.

These include:

• Lack of legislative competence;
• Violation of Fundamental Rights;
• Violation of constitutional provisions;
• Failure to conform to the parent statute;
• Repugnancy to other laws; and
• Manifest arbitrariness in appropriate circumstances.

Laying Before Parliament

Indian statutes may require delegated legislation to be laid before Parliament.

Different statutes prescribe different types of laying procedures.

The principal forms include:

• Simple laying;
• Negative resolution;
• Affirmative resolution; and
• Modified forms of parliamentary control.

The legal consequences of non-compliance depend upon the language and structure of the parent statute.

Comparative Position

Feature	UK	USA	India
Constitutional foundation	Parliamentary Sovereignty	Separation of powers and Article I	Constitutional allocation of legislative power
Main law-making authority	Parliament	Congress	Parliament and State Legislatures
Delegated authority	Ministers, departments, local authorities and other bodies	Federal administrative agencies	Executive, ministries, regulators, local authorities and other statutory bodies
Principal procedural framework	Statutes and parliamentary procedures	Administrative Procedure Act, 1946	Parent statutes, rules and parliamentary procedures
Parliamentary/legislative control	Strong formal scrutiny mechanisms	Congressional oversight	Committee on Subordinate Legislation and other mechanisms
Judicial control	Ultra vires and judicial review	APA and constitutional review	Ultra vires and constitutional judicial review
Excessive delegation	Generally framed through statutory and constitutional principles	Nondelegation doctrine	Doctrine against excessive delegation
Public participation	Parliamentary and statutory procedures vary	Notice-and-comment is central	Depends upon parent statute/rules
Fundamental rights control	Human Rights Act and common law	Constitutional rights	Fundamental Rights
Key doctrine	Ultra vires	Nondelegation	Essential legislative functions
Leading case	GCHQ / cases on ultra vires	J.W. Hampton	In re Delhi Laws Act

Comparative Study of Parliamentary Control

United Kingdom

Parliamentary scrutiny of delegated legislation operates principally through procedures such as:

• Negative resolution;
• Affirmative resolution; and
• Super-affirmative procedures in certain cases.

The parent Act determines the applicable procedure.

United States

Congress controls agencies through:

• Enabling legislation;
• Oversight;
• Appropriations;
• Hearings;
• Reporting requirements; and
• Other statutory mechanisms.

Federal agency rule-making also follows procedures prescribed by the APA and other legislation.

India

Parliamentary control operates through:

• Laying procedures;
• Questions and debates;
• Committee scrutiny; and
• The Committee on Subordinate Legislation.

Thus, all three systems recognise the need to supervise delegated legislative power, although the mechanisms differ.

Comparative Study of Judicial Control

United Kingdom

Courts primarily ask whether the subordinate authority has acted within the statutory authority granted by Parliament.

The ultra vires doctrine is central.

United States

Courts examine agency regulations under statutory, constitutional and administrative-law standards.

The APA provides an important statutory framework, while the nondelegation doctrine and major questions doctrine impose constitutional constraints.

India

Courts can examine delegated legislation for:

• Excessive delegation;
• Constitutional violations;
• Statutory inconsistency;
• Procedural defects; and
• Other recognised grounds of judicial review.

India therefore combines statutory ultra vires review with strong constitutional review.

Delegated Legislation and Public Participation

The three systems differ substantially in the degree and form of public participation.

UK

Participation depends on the statutory and parliamentary framework applicable to the particular instrument.

USA

Notice-and-comment rule-making provides a particularly developed mechanism for public participation in federal rule-making.

India

Public consultation depends largely on the parent statute, applicable rules and administrative practice.

Not every delegated legislative instrument necessarily requires a general public consultation process.

Delegated Legislation and Administrative Expertise

All three jurisdictions recognise the practical importance of administrative expertise.

Modern regulatory subjects often require specialised knowledge in:

• Economics;
• Finance;
• Technology;
• Environment;
• Public health;
• Industry; and
• Scientific regulation.

Delegated legislation allows specialist administrative authorities to formulate detailed regulatory standards.

However, expertise does not itself confer unlimited legal authority.

Advantages of Delegated Legislation

The advantages are broadly similar across the three systems.

Flexibility

Rules can be modified more easily than primary legislation.

Technical Expertise

Specialised agencies can formulate technically detailed regulations.

Speed

Administrative authorities can respond more rapidly to changing circumstances.

Local Adaptation

Delegated powers can permit rules to reflect local conditions.

Administrative Efficiency

Legislatures can concentrate on major questions of policy while subordinate authorities handle technical details.

Disadvantages of Delegated Legislation

Delegated legislation can create concerns relating to:

• Excessive executive power;
• Insufficient legislative scrutiny;
• Democratic accountability;
• Complexity;
• Excessive regulation;
• Risk of exceeding delegated authority; and
• Difficulty for citizens in understanding the regulatory framework.

These concerns explain the importance of parliamentary, legislative, judicial and procedural controls.

Important Cases

In re Delhi Laws Act, 1912 (1951)

Leading Indian case establishing that essential legislative functions cannot be delegated completely.

Indian Express Newspapers (Bombay) Pvt. Ltd. v. Union of India (1985)

Important authority on judicial review of subordinate legislation.

State of Tamil Nadu v. P. Krishnamurthy (2006)

Explained recognised grounds for challenging subordinate legislation.

J.W. Hampton, Jr. & Co. v. United States (1928)

Established the intelligible-principle approach to congressional delegation.

Panama Refining Co. v. Ryan (1935)

Invalidated an excessive delegation for lack of adequate congressional guidance.

A.L.A. Schechter Poultry Corp. v. United States (1935)

Invalidated provisions involving excessive delegation of legislative authority.

West Virginia v. Environmental Protection Agency (2022)

Important modern US authority concerning the major questions doctrine and significant assertions of agency regulatory power.

Loper Bright Enterprises v. Raimondo (2024)

Overruled Chevron deference and emphasised the judiciary’s responsibility to independently interpret statutes.

Key Points for Examination

• Delegated legislation is law made by a subordinate authority under legislative authority.
• It is necessary because modern legislatures cannot deal with every technical and administrative detail.
• The UK operates delegated legislation within the framework of Parliamentary Sovereignty.
• The US system is influenced by separation of powers and the nondelegation doctrine.
• The Indian Constitution permits delegation but does not permit the legislature to surrender its essential legislative function.
• In re Delhi Laws Act (1951) is the leading Indian case on excessive delegation.
• The Administrative Procedure Act, 1946 is the principal general federal framework for US administrative procedure.
• Notice-and-comment rule-making is a major feature of US federal administrative rule-making.
• The UK uses mechanisms such as negative, affirmative and super-affirmative procedures for parliamentary scrutiny of certain delegated legislation.
• India exercises parliamentary control through laying procedures and the Committee on Subordinate Legislation.
• Judicial review controls delegated legislation in all three jurisdictions.
• The UK emphasises ultra vires.
• The USA relies on statutory review, constitutional limits including nondelegation, and doctrines such as the major questions doctrine.
• India combines ultra vires review, constitutional review and the doctrine against excessive delegation.
• Delegated legislation cannot be used as a means of completely transferring legislative responsibility from the legislature to the executive.

Conclusion

Delegated legislation is an essential feature of modern administration in the United Kingdom, United States and India. All three systems recognise that legislatures must delegate authority to deal with technical, detailed and changing regulatory matters.

The constitutional basis, however, differs. The UK operates within Parliamentary Sovereignty and relies heavily on statutory delegation and ultra vires review. The USA approaches delegation through separation of powers, the nondelegation doctrine, the Administrative Procedure Act and constitutional limits on agency authority. India permits delegation while requiring the legislature to retain its essential legislative function and subjects subordinate legislation to constitutional and judicial review.

Despite these differences, the underlying principle is common: delegated legislative power must remain within legally defined limits and must be subject to effective mechanisms of legislative, procedural and judicial control.