An Overview of the Australian Legal System (VCE SSCE Legal Studies): Revision Notes
An Overview of the Australian Legal System

Understanding Australia's legal system
Australia's legal system encompasses the rules, procedures, and institutions that create, administer, interpret, and enforce the law. At its core, laws are binding legal rules created by recognised authorities such as parliaments and courts. These laws must be followed by all members of society and are enforced by agencies including the police.
A 'legal system' is a term used to describe the rules, procedures and institutions that create, administer, interpret and enforce laws.
Why laws exist
Laws serve several essential purposes in Australian society. They protect the safety and wellbeing of individuals and communities, establish and safeguard basic human rights, and provide protection for society's most vulnerable members. A fundamental objective of the legal system is to achieve social cohesion, which refers to the willingness of people within society to cooperate and work together harmoniously. Laws establish clear boundaries of acceptable behaviour, helping everyone understand their rights and responsibilities within the community.
The Three Key Purposes of Laws:
- Protect the safety and wellbeing of individuals and communities
- Establish and safeguard basic human rights
- Provide protection for society's most vulnerable members
All three purposes work together to promote social cohesion - the willingness of members of a society to cooperate with each other in order to survive and prosper.
Components of the legal system
While laws aim to regulate behaviour and promote social cohesion, disputes inevitably arise and laws are sometimes broken. Therefore, the legal system must include mechanisms to interpret laws and determine outcomes when conflicts occur. The Australian legal system consists of three main components:
- Parliaments create laws through a formal legislative process
- Enforcement bodies such as police ensure laws are followed and enforced
- Courts interpret and apply laws when deciding criminal cases and civil disputes
The Australian Constitution and Federation
Before European colonisation, First Nations peoples lived in Australia for at least 65,000 years, developing the world's longest continuing cultures. These communities had their own sophisticated systems and practices that regulated human behaviour, many of which continue to be observed today.
Formation of the Constitution
Prior to 1901, Australia did not exist as a unified nation. Between 1788 and 1859, six separate British colonies were established, each with its own parliament that made laws only for its residents. By the late 1800s, colonists recognised the benefits of uniting as one nation, particularly to strengthen defence capabilities and simplify matters relating to immigration, rail transport, tariffs, and trade.
The colonies held a series of constitutional conventions (formal meetings) where they agreed to form a federation of states within a new Commonwealth of Australia. Federation refers to the union of sovereign states that voluntarily gave up certain powers to a central authority. These conventions also produced agreement on the wording of an Australian Constitution.
The Australian Constitution is a set of rules and principles that guide the way Australia is governed. It is contained within the Commonwealth of Australia Constitution Act and came into operation on 1 January 1901, known as Federation Day.
The Constitution established the framework for Australia's parliaments, defined their law-making powers, and set out how the nation would be governed.
The High Court of Australia
The Australian Constitution also established the High Court of Australia. This court serves as the ultimate court of appeal in the country and holds the authority to hear and determine disputes about the interpretation of the Constitution itself. The High Court sits at the apex of the Australian court system and only hears appeals that raise important points of law, with permission (leave) required before an appeal can be heard.
Australia's system of government
Constitutional monarchy
Australia operates as a constitutional monarchy, meaning the British monarch serves as the head of state while the parliamentary system is governed by the terms set out in the Australian Constitution. Currently, King Charles III holds this position, having inherited it from Queen Elizabeth II in 2022. The King is represented in Australia by the Governor-General at the Commonwealth level and by governors at the state level.
Australia is also described as a democracy because parliaments consist of members who have been elected by the people through voting. These elected representatives are given the responsibility to make laws on behalf of their constituents. Most members of parliament belong to a political party, which is an organisation representing people with shared values and ideas who aim to have their members elected to parliament.
Constitutional Monarchy vs Republic:
In Australia's current system (constitutional monarchy), the British monarch inherits the position as head of state. If Australia were to become a republic, an appointed or elected Australian person (possibly called a president) would replace the monarch as head of state. The key difference is that in a republic, the head of state is chosen by the people, whereas in a monarchy, the position is inherited.
Law-makers in Australia
Australia has two main law-makers: parliament, which creates statute law (also called legislation or Acts of Parliament), and the courts, which develop common law (also called case law or judge-made law).
Parliament as law-maker
Parliament serves as the primary law-making body in Australia's legal system. A parliament is a formal assembly of elected representatives who gather to debate and pass laws for the peace, order, and good government of the community.
Australia has nine parliaments in total:
- One Commonwealth Parliament
- Six state parliaments
- Two territory parliaments
Each parliament is the supreme law-making body within its jurisdiction, meaning it can make, change, or abolish laws within its area of authority whenever it chooses (though certain factors limit this ability, as explored in Unit 4).
The Westminster system
Australia's parliamentary system is modelled on Britain's Westminster system. This system has two defining features:
Two Key Features of the Westminster System:
1. Separation of powers: There is a clear separation between those who make laws (parliament), those who administer laws (the executive or government), and those who interpret how the law should be applied (the courts). This separation ensures that no single body holds excessive power.
2. Responsible government: The government (or executive), which is responsible for administering and carrying out laws, must be accountable for its actions and answerable to the elected parliament. This principle of responsible government requires the government to maintain the confidence of the majority in the lower house. If it loses this confidence, it must resign or face a vote of no confidence.
Bicameral parliaments
Most Australian parliaments are bicameral, meaning they consist of two separate houses or chambers where elected members sit to debate and pass laws. These are known as the upper house and the lower house, and both contain members who have been democratically elected by the people to represent their views and values.
Structure of Australian Parliaments:
The Commonwealth Parliament consists of:
- Upper house: Senate
- Lower house: House of Representatives
- The King (represented by the Governor-General)
The Victorian Parliament consists of:
- Upper house: Legislative Council
- Lower house: Legislative Assembly
- The King (represented by the Governor of Victoria)
Exception: Three Australian parliaments are unicameral (having only one house): Queensland, the Northern Territory, and the Australian Capital Territory.
Government, opposition, and crossbenchers
The political party holding the majority of seats in the lower house forms the government. The government is the ruling authority with power to govern, and its members take on ministerial responsibilities for administering laws and government departments.
The main political party other than the government forms the opposition. The opposition holds the second-largest number of seats in the lower house and plays a crucial role by questioning the government about policy matters and holding it accountable for its actions.
Crossbenchers are members of parliament who belong neither to the government nor the opposition. They are independent members or members of minor parties who sit on the crossbench seats in parliament.
Courts as law-makers
Courts are legal institutions that decide criminal cases and civil disputes. When performing this function, they interpret and apply laws made by parliament. In Australia, courts operate independently of parliament and government and are presided over by judges and magistrates.
Court jurisdiction and hierarchy
Jurisdiction refers to the lawful authority or power of a court to decide legal cases. Australia has both Commonwealth (federal) courts and state courts. The Commonwealth courts include the High Court of Australia, the Federal Court, and the Federal Circuit and Family Court of Australia.
Victorian Court Hierarchy (from highest to lowest):
- High Court of Australia (Federal)
- Supreme Court of Victoria – Court of Appeal
- Supreme Court of Victoria – Trial Division
- County Court of Victoria
- Magistrates' Court of Victoria
Specialist courts: The Children's Court and the Coroners Court
Courts are arranged in a hierarchy, with higher courts hearing more serious and complicated cases while lower courts deal with less serious matters and everyday issues.
The High Court, although a federal court, also serves as the court of appeal from each state's highest court. However, it only hears appeals (applications to have a higher court review a decision) that raise important points of law, and permission (leave) must be obtained before appealing to the High Court.
Types of law in Australia
Statute law
A statute (also known as an Act of Parliament or legislation) is a law passed by parliament. Creating statute law involves presenting a bill (a proposed law) in one of the houses of parliament, where it is debated and must be passed by a majority of members in each house. After both houses vote in favour of the bill, it must receive royal assent—the formal signing and approval by the King's representative (the Governor-General at Commonwealth level or the governor at state level). Only after royal assent does the bill become an Act of Parliament.
Identifying Statutes:
Statutes can be identified by the word 'Act' in their title, which also shows when the Act was made and which parliament created it.
Secondary legislation
Secondary legislation (also called delegated legislation) consists of rules and regulations made by people or bodies who have been given limited powers by parliament to create specific regulations. This allows specialised authorities, such as local councils or government departments, to make and implement regulations, rules, and orders relatively quickly without requiring passage through parliament. Examples include building and planning laws made by local councils and court rules made by the courts themselves.
Common law
Common law (also known as case law or judge-made law) is law created by judges through their decisions in cases. When courts interpret and apply statutes made by parliament, judges can broaden or narrow the meaning of words or phrases in legislation. Once a meaning is determined, it can become a principle of law called a precedent that must be followed in future cases where the material facts are similar.
Judges also develop law when deciding new issues where no existing legislation applies, or when a previous principle of law needs to be expanded to apply to a new situation. Through this process of deciding cases and establishing precedents, judges actively create and develop the law alongside parliament.
Exam guidance
When answering questions about the Australian legal system:
- Define questions require precise definitions of key terms such as 'statute law', 'common law', or 'responsible government'
- Distinguish questions require you to identify clear differences between concepts (e.g., statute law is made by parliament through a formal legislative process, while common law is made by judges through court decisions)
- Explain questions need you to provide reasons and demonstrate understanding, not just describe facts
- Use examples to support your explanations, such as specific Acts of Parliament or court cases where relevant
Remember!
Key Concepts to Remember:
- Australia's legal system consists of three main components: parliaments that make laws, enforcement bodies like police, and courts that interpret and apply laws
- The Australian Constitution, which came into effect on 1 January 1901, established the framework for government and created the High Court of Australia
- Australia is a constitutional monarchy and democracy, with the British monarch as head of state and elected representatives making laws on behalf of the people
- The Westminster system features separation of powers and the principle of responsible government
- Most Australian parliaments are bicameral (two houses), except Queensland, Northern Territory, and Australian Capital Territory, which are unicameral
Important Terms:
Laws, parliament, social cohesion, Australian Constitution, Federation, High Court, constitutional monarchy, Westminster system, responsible government, bicameral, government, opposition, crossbenchers, statute/Act of Parliament, bill, royal assent, secondary legislation, jurisdiction, common law, precedent
Critical Framework:
Australia has two main types of law-makers:
- Parliament creates statute law through bills that receive royal assent
- Courts create common law through judicial decisions that establish precedents
Both work within the framework established by the Australian Constitution to create a comprehensive legal system that promotes social cohesion and protects the rights of all Australians.