Introduction
Specialised Agencies of the United Nations are autonomous international organisations brought into relationship with the United Nations through agreements established under the UN Charter.
- Introduction
- Legal Basis
- Meaning of Specialised Agencies
- Main Characteristics
- Relationship with the United Nations
- ECOSOC and Specialised Agencies
- Article 58
- Article 59
- Major Specialised Agencies
- The Principal Specialised Agencies
- Important Distinction: UN Organs vs Specialised Agencies
- Specialised Agencies vs UN Programmes and Funds
- Specialised Agencies vs Subsidiary Organs
- Legal Personality
- Principle of Functional Powers
- Implied Powers
- Privileges and Immunities
- Responsibility of Specialised Agencies
- Member State Responsibility
- Treaty-Making Capacity
- Relationship with ECOSOC
- Relationship with General Assembly
- Relationship with Security Council
- Importance of Specialised Agencies
- Role in International Law
- Specialised Agencies and Global Governance
- Important Cases
- Principle of Speciality
- Advantages of Specialised Agencies
- Limitations
- Specialised Agencies and Sovereignty
- Important Distinctions
- Exam Table
- Major Agencies and Their Fields
- Complete Relationship Flowchart
- Specialised Agencies Flowchart
- Quick Revision
- Key Exam Points
- Conclusion
They are created to deal with particular areas of international cooperation, such as:
- health;
- labour;
- education;
- agriculture;
- food;
- aviation;
- telecommunications;
- finance;
- trade and development;
- meteorology;
- intellectual property.
They are not ordinary departments of the United Nations Secretariat. Each specialised agency is a separate international organisation with its own:
- constituent instrument;
- membership;
- organs;
- budget;
- legal personality;
- functions and powers.
Their relationship with the UN is primarily governed by Articles 57 and 63 of the UN Charter.
Legal Basis
The principal Charter provisions are:
| Article | Subject |
|---|---|
| Article 57 | Specialised agencies |
| Article 58 | Recommendations concerning coordination of policies and activities |
| Article 59 | Possibility of creating new specialised agencies |
| Article 60 | General Assembly and ECOSOC responsibilities |
| Article 63 | Agreements between ECOSOC and specialised agencies |
| Article 64 | ECOSOC may obtain reports and information |
| Article 65 | ECOSOC may furnish information to Security Council |
| Article 66 | Other functions of ECOSOC |
Meaning of Specialised Agencies
Article 57
Article 57 provides that specialised agencies are international organisations established by intergovernmental agreement and possessing wide international responsibilities in areas such as:
- economic;
- social;
- cultural;
- educational;
- health;
- related fields.
They are brought into relationship with the United Nations in accordance with Article 63.
Simple Definition
Specialised Agency
→ Separate international organisation
→ Created by international agreement
→ Has specialised international functions
→ Brought into relationship with the UN
→ Coordinates with the UN system
Main Characteristics
Separate Legal Personality
A specialised agency is generally legally distinct from the United Nations.
It has its own legal personality under international law.
Therefore:
UN ≠ Specialised Agency
The agency is an independent international organisation that cooperates with the UN.
Created by International Agreement
Specialised agencies are generally established through their own constituent treaties or constitutions.
Examples include:
- Constitution of the WHO;
- ILO Constitution;
- UNESCO Constitution;
- FAO Constitution;
- ICAO Convention.
Autonomous Organisation
Specialised agencies have their own:
- governing bodies;
- administrative structures;
- budgets;
- membership arrangements;
- decision-making procedures.
They are therefore not simply administrative branches of the UN.
Functional Specialisation
Each agency concentrates on a particular area.
For example:
WHO → Health
ILO → Labour
UNESCO → Education, science and culture
FAO → Food and agriculture
ICAO → Civil aviation
Relationship with the United Nations
The UN Charter creates a framework for cooperation and coordination.
Article 63
The Economic and Social Council (ECOSOC) may enter into agreements with specialised agencies.
These agreements are subject to approval by the General Assembly.
The agreements establish the terms under which the agency is brought into relationship with the UN.
ECOSOC and Specialised Agencies
ECOSOC performs an important coordinating role.
It may:
- coordinate the activities of specialised agencies;
- make recommendations;
- receive reports;
- obtain information;
- communicate information to the General Assembly;
- assist in coordinating international economic and social activities.
Article 64
ECOSOC may obtain regular reports from specialised agencies.
It may also make arrangements to receive reports concerning steps taken to give effect to its recommendations and recommendations of the General Assembly.
Article 58
The General Assembly and ECOSOC may make recommendations for coordinating the policies and activities of specialised agencies.
Thus:
UN
↓
ECOSOC
↓
Coordination
↓
Specialised Agencies
Article 59
Article 59 provides for cooperation in relation to the establishment of new specialised agencies where necessary to accomplish the purposes set forth in Article 55.
Major Specialised Agencies
There are 15 specialised agencies in the UN system.
| Specialised Agency | Main Field |
|---|---|
| International Labour Organization (ILO) | Labour and employment |
| Food and Agriculture Organization (FAO) | Food and agriculture |
| United Nations Educational, Scientific and Cultural Organization (UNESCO) | Education, science and culture |
| World Health Organization (WHO) | Health |
| International Civil Aviation Organization (ICAO) | Civil aviation |
| International Maritime Organization (IMO) | Maritime affairs and shipping |
| International Telecommunication Union (ITU) | Telecommunications and information communication technologies |
| World Meteorological Organization (WMO) | Meteorology, climate and atmospheric science |
| Universal Postal Union (UPU) | International postal cooperation |
| International Fund for Agricultural Development (IFAD) | Agricultural and rural development finance |
| International Monetary Fund (IMF) | Monetary and financial cooperation |
| World Bank Group | Development finance |
| International Development Association (IDA) | Development assistance and concessional finance |
| International Finance Corporation (IFC) | Private-sector development finance |
| Multilateral Investment Guarantee Agency (MIGA) | Investment guarantees |
| World Intellectual Property Organization (WIPO) | Intellectual property |
| International Fund… | — |
Important correction for examination purposes: The UN system traditionally identifies 15 specialised agencies, counting the World Bank Group as one specialised-agency relationship, rather than counting each World Bank Group institution separately.
The 15 are:
- ILO
- FAO
- UNESCO
- WHO
- ICAO
- IMO
- ITU
- WMO
- UPU
- IFAD
- IMF
- World Bank
- WIPO
- IFAD?
To avoid confusion, the recognised UN specialised-agency list should be memorised from the current UN system rather than by counting individual World Bank Group institutions.
The Principal Specialised Agencies
International Labour Organization
The International Labour Organization (ILO) deals primarily with:
- labour standards;
- employment;
- social justice;
- workers’ rights;
- working conditions.
It is historically significant because it predates the UN and was created in 1919.
The ILO became a UN specialised agency in 1946.
Food and Agriculture Organization
The Food and Agriculture Organization (FAO) works on:
- food security;
- agriculture;
- nutrition;
- fisheries;
- forestry;
- rural development.
Its headquarters are in Rome.
UNESCO
The United Nations Educational, Scientific and Cultural Organization (UNESCO) works in:
- education;
- science;
- culture;
- communication;
- preservation of cultural heritage.
It is particularly known for the World Heritage Convention and the World Heritage system.
World Health Organization
The World Health Organization (WHO) is responsible for international cooperation in public health.
Its work includes:
- disease prevention;
- health standards;
- global health emergencies;
- international health cooperation;
- technical assistance.
Its Constitution entered into force in 1948.
International Civil Aviation Organization
The International Civil Aviation Organization (ICAO) promotes cooperation concerning international civil aviation.
It develops international standards and recommended practices relating to civil aviation.
It operates under the Chicago Convention, 1944.
International Maritime Organization
The International Maritime Organization (IMO) deals with international shipping.
Its work includes:
- maritime safety;
- prevention of marine pollution;
- shipping standards;
- maritime security.
International Telecommunication Union
The International Telecommunication Union (ITU) works on:
- telecommunications;
- radio spectrum;
- satellite orbits;
- information and communication technologies;
- international technical standards.
It is one of the oldest international organisations, originating in the nineteenth century.
World Meteorological Organization
The World Meteorological Organization (WMO) facilitates international cooperation concerning:
- weather;
- climate;
- hydrology;
- atmospheric science;
- related observations and information exchange.
Universal Postal Union
The Universal Postal Union (UPU) facilitates international cooperation concerning postal services.
It establishes common frameworks for international postal exchange.
Its headquarters are in Bern, Switzerland.
World Intellectual Property Organization
The World Intellectual Property Organization (WIPO) deals with:
- patents;
- trademarks;
- copyright;
- industrial designs;
- other intellectual property rights.
Its headquarters are in Geneva.
International Monetary Fund
The International Monetary Fund (IMF) promotes international monetary and financial cooperation.
Its functions include:
- monetary cooperation;
- financial stability;
- balance-of-payments assistance;
- economic surveillance;
- technical assistance.
World Bank
The World Bank supports economic development and poverty reduction through:
- development financing;
- infrastructure support;
- institutional development;
- social and economic programmes.
The World Bank Group includes several legally distinct institutions.
International Fund for Agricultural Development
The International Fund for Agricultural Development (IFAD) focuses on:
- rural development;
- agricultural development;
- food security;
- reducing rural poverty.
International Finance Institutions
The UN system’s relationship with the Bretton Woods institutions is particularly important.
The IMF and World Bank were created at the Bretton Woods Conference in 1944 and later became part of the UN system of specialised agencies.
Important Distinction: UN Organs vs Specialised Agencies
A specialised agency should not be confused with a principal organ of the UN.
Principal Organs
Created directly by the UN Charter.
Examples:
- General Assembly;
- Security Council;
- ECOSOC;
- ICJ;
- Secretariat.
Specialised Agencies
Separate international organisations created through their own constituent instruments and brought into relationship with the UN.
Examples:
- WHO;
- ILO;
- UNESCO;
- FAO;
- ICAO.
Specialised Agencies vs UN Programmes and Funds
This distinction is frequently tested.
Specialised Agencies
Generally separate international organisations with their own constituent instruments and legal personality.
Examples:
WHO, ILO, UNESCO, FAO
UN Programmes and Funds
Generally created by UN organs and operate within the UN system rather than as independent specialised agencies.
Examples include:
- UNDP;
- UNICEF;
- UNHCR;
- UNEP;
- UNFPA.
Therefore:
WHO ≠ UNICEF
ILO ≠ UNDP
They are different institutional categories.
Specialised Agencies vs Subsidiary Organs
A subsidiary organ is created by a principal UN organ pursuant to its powers.
A specialised agency is an independent international organisation linked to the UN through an agreement.
Example
General Assembly → subsidiary organ
ECOSOC → coordination with specialised agencies
This distinction is important in international institutional law.
Legal Personality
Specialised agencies generally possess international legal personality.
They may have the capacity, within their constitutional powers, to:
- enter into agreements;
- own property;
- employ personnel;
- bring or receive international claims where applicable;
- exercise international functions;
- incur international responsibility.
The precise extent of their legal capacity depends upon their constituent instruments and applicable international law.
Principle of Functional Powers
Specialised agencies operate according to the principle of speciality.
Unlike sovereign States, they do not possess general competence over all matters.
Their authority is limited to the functions assigned to them.
For example:
WHO
→ Health functions
ICAO
→ Civil aviation functions
WIPO
→ Intellectual property functions
This is sometimes expressed through the principle of attributed or conferred powers.
Implied Powers
International organisations may possess powers that are not expressly stated but are necessary for carrying out their functions.
The broader doctrine of implied powers was recognised in the Reparation for Injuries advisory opinion concerning the United Nations.
However, the precise scope of implied powers depends upon the constituent instrument and functions of the particular organisation.
Privileges and Immunities
Specialised agencies and their officials may receive privileges and immunities necessary for the independent exercise of their functions.
An important instrument is the:
Convention on the Privileges and Immunities of the Specialized Agencies, 1947
The Convention provides a framework concerning:
- legal capacity;
- property;
- immunity;
- communications;
- officials;
- privileges necessary for institutional functions.
Responsibility of Specialised Agencies
Specialised agencies can incur international responsibility for internationally wrongful conduct attributable to them.
The ILC Articles on the Responsibility of International Organizations (ARIO) provide an important framework for analysing such responsibility.
The general structure is:
Conduct attributable to organisation
Breach of international obligation
↓
International responsibility
Member State Responsibility
A Member State does not automatically become responsible for an act of a specialised agency merely because it is a member of that organisation.
Responsibility must be determined under the applicable rules of international law.
This distinction is important because:
Agency responsibility ≠ automatic Member State responsibility
Treaty-Making Capacity
Specialised agencies may enter into international agreements within the scope of their functions and constitutional powers.
The 1986 Vienna Convention on the Law of Treaties between States and International Organizations or between International Organizations is relevant to the broader law of treaties involving international organisations, although it has not entered into force.
Relationship with ECOSOC
The relationship can be represented as:
Specialised Agencies
↓
ECOSOC
↓
Reports + Coordination + Recommendations
↓
General Assembly
The relationship is one of coordination, not ordinary hierarchical administration.
Relationship with General Assembly
The General Assembly:
- approves relevant relationship agreements under Article 63;
- receives information and reports through the UN system;
- provides broader policy coordination;
- participates in the financing and institutional framework of the UN system.
The exact relationship varies according to the constitution of the particular agency.

Relationship with Security Council
Specialised agencies primarily operate in economic, social, technical and related fields.
However, their activities may intersect with questions of:
- international peace;
- humanitarian emergencies;
- sanctions;
- international security.
The Charter allows coordination between UN organs and the specialised agencies where appropriate.
Importance of Specialised Agencies
Specialised agencies have made international cooperation possible in areas that cannot effectively be handled by individual States alone.
They contribute to:
- development of international standards;
- treaty-making;
- technical cooperation;
- collection of international data;
- dispute prevention;
- capacity building;
- global coordination.
Role in International Law
Specialised agencies contribute to international law by:
- drafting conventions;
- adopting international standards;
- developing technical regulations;
- creating institutional practice;
- facilitating international cooperation;
- promoting implementation of treaties.
Examples include:
ICAO → International aviation standards
IMO → Maritime conventions and standards
WIPO → Intellectual property treaties
ILO → International labour standards
WHO → International health regulations and standards
Specialised Agencies and Global Governance
The specialised-agency system reflects the idea that modern international problems require functional international cooperation.
Instead of one organisation dealing with every technical issue, different organisations develop expertise in particular fields.
Functional Model
International Problem
↓
Specialised Expertise
↓
International Organisation
↓
International Standards + Cooperation
↓
Global Governance
Important Cases
Reparation for Injuries Suffered in the Service of the United Nations (1949)
Although the case concerned the United Nations rather than a specialised agency, it is fundamental to understanding the legal personality and functional capacity of international organisations.
The ICJ recognised the international legal personality of the UN and its capacity to exercise functions necessary for achieving its purposes.
Interpretation of the Agreement of 25 March 1951 between the WHO and Egypt (1980)
The ICJ considered issues concerning the relationship between an international organisation and a host State.
It is relevant to:
- institutional independence;
- treaty obligations;
- privileges and immunities;
- international organisations.
Legality of the Use by a State of Nuclear Weapons in Armed Conflict (1996)
The WHO had requested an advisory opinion concerning nuclear weapons and health.
The ICJ concluded that the WHO’s request did not fall within its constitutional competence.
This case is particularly important for the principle of speciality.
WHO Nuclear Weapons Advisory Opinion
The Court effectively demonstrated that an international organisation cannot seek an advisory opinion on matters falling outside the scope of its functions merely because the issue has some connection with its work.
Thus:
International Organisation
↓
Conferred Functions
↓
Scope of Competence
↓
Question must fall within that competence
Principle of Speciality
The WHO Nuclear Weapons opinion illustrates a fundamental principle:
International organisations possess powers for the purposes and functions for which they were created.
They are therefore different from States, which possess general international legal capacity.
Advantages of Specialised Agencies
Expertise
They possess technical knowledge in specialised fields.
International Coordination
They allow States to coordinate policies internationally.
Standardisation
They develop common international standards.
Continuity
Their permanent institutions allow long-term international cooperation.
Capacity Building
They provide technical assistance and institutional support to developing States.
Limitations
Specialised agencies also face limitations.
Limited Competence
Their authority is restricted by their constituent instruments.
State Dependence
They depend heavily on Member States for:
- funding;
- implementation;
- cooperation.
Political Differences
States may disagree about:
- policies;
- funding;
- institutional priorities;
- decision-making.
Institutional Fragmentation
Multiple organisations can sometimes produce:
- overlapping functions;
- coordination difficulties;
- duplication of work.
Specialised Agencies and Sovereignty
Specialised agencies do not possess sovereignty equivalent to States.
Their powers are:
Conferred
rather than
inherent.
Their authority therefore depends on:
- constituent instruments;
- international agreements;
- decisions adopted under those instruments;
- applicable international law.
Important Distinctions
Specialised Agency vs UN Organ
UN Organ
→ Created directly under Charter
Specialised Agency
→ Separate organisation linked to UN
Specialised Agency vs UN Programme
Specialised Agency
→ Separate international organisation
UN Programme
→ Generally established within UN institutional framework
Specialised Agency vs NGO
Specialised Agency
→ Intergovernmental organisation
NGO
→ Generally privately established organisation
Exam Table
| Feature | Specialised Agency |
|---|---|
| Legal nature | Separate international organisation |
| Created by | International agreement/constituent instrument |
| Relationship with UN | Formal relationship under UN Charter |
| Main Charter provisions | Articles 57–63 |
| Coordination | Primarily through ECOSOC |
| Legal personality | Generally possesses international legal personality |
| Powers | Specialised/conferred |
| Membership | Depends on constituent instrument |
| Budget | Generally separate |
| Organs | Own institutional organs |
| UN Secretariat department? | No |
| Example | WHO |
| Key principle | Principle of speciality |
Major Agencies and Their Fields
| Agency | Field |
|---|---|
| ILO | Labour |
| FAO | Food and agriculture |
| UNESCO | Education, science and culture |
| WHO | Health |
| ICAO | Civil aviation |
| IMO | Maritime affairs |
| ITU | Telecommunications |
| WMO | Meteorology |
| UPU | Postal services |
| WIPO | Intellectual property |
| IMF | Monetary cooperation |
| World Bank | Development finance |
| IFAD | Rural/agricultural development |
Complete Relationship Flowchart
United Nations
↓
UN Charter
↓
Articles 57–63
↓
Specialised Agencies
↙︎ ↓ ↓ ↓ ↘︎
WHO ILO FAO UNESCO WIPO
↓
ECOSOC
↓
Coordination + Reports + Recommendations
↓
General Assembly
Specialised Agencies Flowchart
International Problem
↓
Specialised Field
↓
Independent International Organisation
↓
Constituent Instrument
↓
Specialised Powers
↓
Relationship Agreement with UN
↓
ECOSOC Coordination
↓
International Cooperation
Quick Revision
- Specialised agencies are separate international organisations.
- Their relationship with the UN is governed primarily by Articles 57 and 63 of the Charter.
- Article 57 defines the basic concept of specialised agencies.
- Article 58 concerns coordination of policies and activities.
- Article 59 concerns possible creation of new specialised agencies.
- Article 63 provides for agreements between ECOSOC and specialised agencies.
- Specialised agencies are not departments of the UN Secretariat.
- They generally have their own constituent instruments, organs, budgets and legal personality.
- Their powers are specialised and conferred, not general.
- This reflects the principle of speciality.
- ECOSOC plays a major coordinating role.
- The General Assembly approves relationship agreements under Article 63.
- WHO → Health
- ILO → Labour
- FAO → Food and Agriculture
- UNESCO → Education, Science and Culture
- ICAO → Civil Aviation
- IMO → Maritime Affairs
- ITU → Telecommunications
- WMO → Meteorology
- UPU → Postal Cooperation
- WIPO → Intellectual Property
- IMF → Monetary Cooperation
- World Bank → Development Finance
- IFAD → Rural and Agricultural Development
- The 1947 Convention on the Privileges and Immunities of the Specialized Agencies provides an important framework for privileges and immunities.
- ARIO is relevant to responsibility of international organisations.
- The WHO Nuclear Weapons Advisory Opinion (1996) is an important authority on the principle of speciality and organisational competence.
- Specialised agencies should be distinguished from UN programmes, funds and subsidiary organs.
- Membership in a specialised agency does not automatically make a State responsible for the agency’s conduct.
- The UN and specialised agencies form a system of international cooperation, but the agencies retain substantial institutional autonomy.
Key Exam Points
Article 57 → Specialised Agencies
Article 58 → Coordination
Article 59 → Creation of agencies
Article 63 → ECOSOC agreements
Article 64 → Reports and information
Article 60 → General Assembly + ECOSOC responsibilities
WHO → Health
ILO → Labour
FAO → Agriculture
UNESCO → Education/Science/Culture
ICAO → Civil Aviation
IMO → Maritime Affairs
ITU → Telecommunications
WMO → Meteorology
UPU → Postal Services
WIPO → Intellectual Property
IMF → Monetary Cooperation
World Bank → Development
IFAD → Rural Development
WHO Nuclear Weapons Opinion → Principle of Speciality
Specialised Agency ≠ UN Secretariat Department
Specialised Agency ≠ UN Programme
Conclusion
Specialised agencies form an essential part of the broader United Nations system. They allow States to cooperate through institutions possessing technical expertise in particular fields such as health, labour, agriculture, aviation, maritime affairs, telecommunications, finance and intellectual property.
Their defining characteristic is that they are separate international organisations, created through their own constituent instruments and possessing their own institutional structures. They are brought into formal relationship with the United Nations through the framework established by Articles 57 and 63 of the UN Charter.
The relationship is therefore based more on coordination than hierarchy. ECOSOC has an important coordinating role, while the General Assembly participates in the broader institutional relationship.
For examinations, the most important principle is the principle of speciality: a specialised agency can exercise only those powers that have been conferred upon it by its constituent instrument, together with powers that are properly incidental or implied as necessary for carrying out its functions. The WHO Nuclear Weapons Advisory Opinion (1996) is particularly useful for understanding this limitation.
The easiest way to remember the topic is:
Article 57 → What are they?
Article 58 → Coordination
Article 63 → Relationship with UN
ECOSOC → Coordination
WHO → Health
ILO → Labour
FAO → Agriculture
UNESCO → Education/Culture
WIPO → Intellectual Property
Specialised Agency → Separate international organisation
