BTF5955 · Business and Company Law
The Australian Legal System & the IRAC Method
Topic 1 sets up everything that follows: the sources of Australian law (common law made by judges versus statute made by Parliament), the court hierarchy and the doctrine of precedent, how to read a case and a statute, and above all the IRAC method (Issue, Rule, Application, Conclusion) that structures every answer in the unit. This is the technique the Take-Home Assessment and the open-book final exam are marked against, so getting the skeleton right now pays off in every later topic.
What this chapter covers
- 01Why law matters to business: regulating conduct, allocating risk, creating enforceable rights and obligations
- 02Sources of Australian law: common law (judge-made) vs statute (Acts of Parliament, which prevail over common law)
- 03The federal division of powers: Commonwealth (Corporations Act, Competition and Consumer Act, Privacy Act) vs State/Territory (Wrongs/Civil Liability Acts)
- 04The court hierarchy: High Court → State Courts of Appeal / Supreme Courts → intermediate → lower courts; the Federal Court for federal matters
- 05The doctrine of precedent (stare decisis): ratio decidendi binds; obiter dicta is persuasive only
- 06Criminal (beyond reasonable doubt) vs civil (balance of probabilities); common law vs equity and equitable remedies
- 07Statutory interpretation basics: literal, golden and purposive (mischief) approaches
- 08The IRAC method: Issue → Rule → Application → Conclusion, introduced here and used all unit
Laying out the IRAC skeleton and classifying a legal source
- +1Classify the source. A labelling requirement of this kind is created by legislation (an Act of Parliament or delegated regulation), not by a decided case — so it is statute law, not common law. Statute prevails over inconsistent common law, and it is interpreted using the literal, golden and purposive approaches.
- +1Identify the court/jurisdiction. Because a consumer-protection labelling rule is typically Commonwealth law, a dispute could be heard in the federal court system or the relevant State court exercising jurisdiction; a minor regulatory matter would start in a lower court, with appeals running up the hierarchy toward the High Court. State that the doctrine of precedent means a decision of a superior court binds courts below it.
- +1Lay out the IRAC skeleton — Issue and Rule. Issue: the precise legal question, phrased as a question ('Did Sam breach the allergen-labelling requirement?'), not a topic label. Rule: state the governing statutory provision and any case interpreting it, cited in AGLC4.
- +1Complete the skeleton — Application and Conclusion. Application: apply the rule to Sam's facts, arguing both sides where the labelling was arguably adequate. Conclusion: a reasoned, often tentative, answer to the issue. Note that this same four-step structure is the backbone of the Take-Home and the exam.
Key terms
- Common law vs statute
- Common law is judge-made law developed case-by-case through precedent; statute law is enacted by Parliament. Where they conflict, valid statute prevails over common law. Both are sources of Australian law and both can be examined in an IRAC problem.
- Doctrine of precedent (stare decisis)
- 'To stand by what has been decided.' The ratio decidendi of a superior court binds lower courts in the same hierarchy on similar facts, giving the law certainty and consistency; obiter dicta is persuasive only.
- Ratio decidendi vs obiter dicta
- The ratio decidendi is the binding legal reason for a decision (material facts + legal issue); obiter dicta are remarks not necessary to the decision, which are persuasive but not binding.
- Court hierarchy
- The ranked structure of courts — High Court of Australia at the apex, then State/Territory Courts of Appeal and Supreme Courts, intermediate (District/County) and lower (Magistrates/Local) courts, plus the Federal Court for federal matters. It determines which decisions bind and the path of appeals.
- Criminal vs civil standard of proof
- Criminal cases are proved beyond reasonable doubt (the state prosecutes); civil cases are proved on the balance of probabilities (private parties). Most business-law disputes — contract, negligence, company law — are civil.
- IRAC method
- Issue, Rule, Application, Conclusion — the structured technique for answering legal problem questions. Introduced in Topic 1 and the backbone of every Take-Home and exam answer; the marks live in the Application step.
The Australian Legal System & the IRAC Method FAQ
What is the difference between common law and statute?
Common law is made by judges deciding cases and developing precedent over time; statute law is written and enacted by Parliament as Acts (and delegated regulations). When the two conflict, valid statute wins. In an IRAC answer you must state whether the rule you are applying comes from a case (cite the case and its ratio) or from a section of an Act (cite the provision), because the Rule step needs its source.
What does IRAC stand for and why does it matter in BTF5955?
IRAC is Issue, Rule, Application, Conclusion — a four-step skeleton for answering legal problems. It matters because the Take-Home Assessment and the open-book final exam are IRAC problem questions: you are handed unfamiliar facts and must frame the issue, state the governing case or statute, apply it to the facts arguing both sides, and reach a reasoned conclusion. The largest share of the marks sits in the Application step, so reciting the rule alone is not enough.
How does the doctrine of precedent affect my answer?
Precedent tells you which authorities bind. A decision of a superior court in the same hierarchy binds courts below it on similar facts (its ratio decidendi), while obiter dicta and decisions from other hierarchies are persuasive only. In an IRAC problem, cite a binding higher-court authority for your Rule where you can, and note when an authority is merely persuasive.
Can Sia help me practise IRAC and legal-source classification?
Yes. Give Sia a short scenario and ask it to walk the IRAC skeleton with you, or to drill you on whether a rule is common law or statute and which court would hear it. It explains each step and checks your reasoning; it does not write your graded assessment, and Monash academic-integrity rules apply.
Exam move
Topic 1 is the foundation the whole unit stands on, so over-invest here. Memorise the four IRAC letters as headings you will physically write on every answer, and practise turning a messy scenario into a one-sentence Issue phrased as a question. Build a quick reference of the court hierarchy and the common-law-versus-statute distinction, because the Rule step always needs you to name and cite the correct source in AGLC4. Drill the 'which source, which court' classification on fresh mini-scenarios until it is automatic, and rehearse the criminal-versus-civil and ratio-versus-obiter distinctions, which recur in later topics. When a step won't click, ask Sia to explain it a different way and to set you a fresh IRAC drill; it teaches the method and checks your reasoning, and it never substitutes for your own graded work.
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