{"id":"age-of-majority-act-1972","name":"Age of Majority Act 1972","slug":"age-of-majority-act-1972","collection":"act","jurisdiction":"wa","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":29930,"registerId":"wa-age-of-majority-act-1972-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Age of Majority Act 1972","content":"![Crest]()Western Australia\n\nAge of Majority Act 1972\n\n- **Reprinted under the *Reprints Act 1984* as**\n- **at 22 August 2003**\n\n\nWestern Australia\n\nAge of Majority Act 1972\n\nContents\n\n1. Short title 1\n\n2. Commencement 1\n\n3. Interpretation 1\n\n4. Attainment of a particular age 2\n\n5. Persons of age of 18 years or more to have full legal capacity 2\n\nNotes\n\nCompilation table 5\n\nDefined terms\n\n  \n\n- Crest **Reprinted under the *Reprints Act 1984* as**\n- **at 22 August 2003**\n\n\nWestern Australia\n\nAge of Majority Act 1972\n\nAn Act to amend the law relating to the age of majority; to make certain consequential amendments to several Acts; to repeal the *Housing Advances (Contracts with Infants) Act 1968*; and for incidental and other purposes 2.\n\n##### 1. Short title\n\nThis Act may cited as the *Age of Majority Act 1972* 1.\n\n##### 2. Commencement\n\nThis Act shall come into operation on a date to be fixed by proclamation 1.\n\n##### 3. Interpretation\n\nIn this Act, unless the contrary intention appears —\n\n  commencing day means the date fixed by proclamation under section 2 to be the date on which this Act comes into operation;\n\n  enactment means —\n\n(a) an Act or a provision of an Act; and\n\n(b) an Imperial Act that applies in the State or a provision of such an Imperial Act,\n\nand includes a regulation, rule, local law, by‑law, order in Council, proclamation, notice or other like document made or issued in the exercise of a power conferred by an Act, or by an Imperial Act, or by such a provision;\n\n  instrument means any written document of whatsoever nature, not being —\n\n(a) an enactment; or\n\n(b) a law of the Commonwealth or of a State other than this State, or any document made or having effect under such a law;\n\n  laws of the State does not include any law of the Commonwealth or any document made or having effect under such a law.\n\n[Section 3 amended: No. 14 of 1996 s. 4.]\n\n##### 4. Attainment of a particular age\n\n(1) For all the purposes of the laws of the State, the time at which a person attains a particular age expressed in years shall be the commencement of the relevant anniversary of the date of his birth.\n\n(2) This section has effect only where the relevant anniversary falls on the commencing day or on a subsequent day.\n\n##### 5. Persons of age of 18 years or more to have full legal capacity\n\n(1) Subject to the succeeding provisions of this section, for all the purposes of the laws of the State —\n\n(a) a person who, on or after the commencing day, attains the age of 18 years attains full age and full capacity on attaining that age; and\n\n(b) a person who, on the commencing day, is of or over the age of 18 years but under the age of 21 years attains full age and full capacity on that day.\n\n(2) Subsection (1) applies and has effect, in the absence of a definition or of an indication of a contrary intention, for the purposes of the construction of the expressions “majority”, “full age”, “adult”, “full capacity”, “*sui juris*”, and similar expressions, and the expressions “infant”, “infancy”, “minor”, “nonage”, “minority”, and similar expressions in —\n\n(a) an enactment, whether passed or made before, on, or after the commencing day; and\n\n(b) an instrument executed or made on or after that day.\n\n(3) This section does not apply so as to affect the operation or construction of any reference in an enactment or instrument to an age expressed in years.\n\n(4) This section does not affect any deficiency of juristic competence or capacity that is attributable to insanity, or mental infirmity, or any other factor distinct from age.\n\n(5) For the purposes of subsection (2)(b) and notwithstanding any rule of law, a will or codicil executed before the commencing day shall not be treated as made on or after that day by reason only that the will or codicil is confirmed by a codicil executed on or after that day.\n\n(6) Any order or direction in force immediately before the commencing day made pursuant to any enactment relating to the control of money recovered by or otherwise payable to a minor in any proceedings or as a result of the compromise or settlement of any claim for money or damages, shall have effect as if any reference to the minor’s attaining the age of 21 years or full age, however expressed, were a reference to his attaining the age of 18 years, or in relation to a person who by virtue of subsection (1)(b) attains full age on the commencing day, to that day.\n\n(7) This section does not apply so as to affect the operation or construction of —\n\n(a) any industrial award, order, determination or agreement;\n\n(b) any instrument made or entered into pursuant to any enactment prescribing wages and other conditions of or relating to apprenticeship;\n\n(c) any provisions of any enactment governing or relating to conditions of employment or rights or obligations arising from employment.\n\n(8) Nothing in this Act shall affect any estate, right or interest in any real or personal property to which any person has become absolutely entitled whether beneficially or otherwise, before the commencing day.\n\n(9) This Act, other than section 4, shall not affect the construction of any enactment where the enactment is incorporated in and has effect as part of any instrument, the construction of which is not affected by this Act, other than section 4.\n\n(10) Nothing in this Act or in any amendment made by section 5 affects the time for bringing proceedings in respect of a cause of action that arose before the commencing day.\n\n(11) Subsection (10) is deemed to have come into operation on 1 November 1972.\n\n[Section 5 amended: No. 33 of 1973 s. 2.]\n\n[**6.** Omitted under the Reprints Act 1984 s. 7(4)(e) and (f).]\n\n[Schedule omitted under the Reprints Act 1984 s. 7(4)(e).]\n\nNotes\n\n1 This reprint is a compilation as at 22 August 2003 of the *Age of Majority Act 1972* and includes the amendments made by the other written laws referred to in the following table. The table also contains information about any reprint.\n\nCompilation table\n\n| **Short title** | **Number and year** | **Assent** | **Commencement** |\n| --- | --- | --- | --- |\n| *Age of Majority Act 1972* | 46 of 1972 | 18 Sep 1972 | 1 Nov 1972 (see s. 2 and *Gazette* 13 Oct 1972 p. 4069) |\n| *Age of Majority Act Amendment Act 1973* | 33 of 1973 | 9 Oct 1973 | 1 Nov 1972 (see s. 2) |\n| **Reprint of the *Age of Majority Act 1972* approved 24 Jun 1981** (includes amendments listed above) | | | |\n| *Local Government (Consequential Amendments) Act 1996* s. 4 | 14 of 1996 | 28 Jun 1996 | 1 Jul 1996 (see s. 2) |\n| **Reprint 2: The *Age of Majority Act 1972* as at 22 Aug 2003** (includes amendments listed above) | | | |\n\n\n2 The provisions in this Act amending other Acts and repealing the *Housing Advances (Contracts with Infants) Act 1968* have been omitted under s. 7(4)(e) and (f) of the *Reprints Act 1984*.\n\nDefined terms\n\n*[This is a list of terms defined and the provisions where they are defined. The list is not part of the law.]*\n\n**Defined term Provision(s)**\n\ncommencing day 3\n\nenactment 3\n\ninstrument 3\n\nlaws of the State 3\n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The Act changes the substantive legal scope of 'majority' under State law by treating persons aged 18 as having full age and legal capacity for most purposes (section 5(1) and (2)). The change is qualified: explicit age references in enactments or instruments remain effective (section 5(3)); employment and industrial instruments are excluded from the change (section 5(7)); vested estates before commencement are preserved (section 5(8)); and other savings and transitional rules (sections 5(4)–(6), 5(9)–(11)) limit the practical reach of the shift to 18."},"complexity_factors":["Short and narrowly focused statutory text (reduces scope for interpretive layering)","Multiple explicit exceptions and savings (s.5(3), s.5(4), s.5(5), s.5(6), s.5(7), s.5(8), s.5(9), s.5(10)) increasing the number of cross-checks required","Dependence on external enactments and instruments: effect is 'in the absence of a definition or of an indication of a contrary intention' (s.5(2)), so practical application requires reviewing other statutes/instruments","Transitional and procedural provisions (wills/codicils, court orders about minors' money, vested property, pre-commencement causes of action) create distinct administrative tasks","Commemoration of commencement by proclamation (s.2) introduces a timing decision that affects cohorts differently"],"plain_english_summary":"### What this law changes, mechanically\n\n- It lowers the legal age at which a person is treated as an adult for most Western Australian law from 21 years to 18 years. A person who attains 18 years on or after the Act's commencement day is treated as having \"full age and full capacity\" at that time; a person who on the commencement day is aged 18 or over but under 21 is treated as attaining full age on the commencement day (section 5(1)).\n- It fixes how to calculate the instant a person attains a given age expressed in years: the start of the relevant anniversary of the birth date (section 4).\n- The date when the Act takes effect is to be set by proclamation (section 2). The Act as reprinted records that the commencing day was 1 November 1972 (Compilation table), but the Act itself leaves the choice of date to proclamation (s.2).\n\n### Official stated purpose (as framed in the Act)\n\n- The Act describes its object as amending the law relating to the age of majority and making consequential amendments to other Acts, with incidental purposes noted in the long title.\n\n### How it works in practice — rules, limits and exceptions\n\n- Scope: The change to adulthood applies \"for all the purposes of the laws of the State\" unless there is a definition or a contrary intention in the particular enactment or instrument (section 5(2)). That means the default is to treat \"majority\", \"adult\", \"full capacity\" and similar expressions as beginning at 18, unless a specific law or instrument says otherwise.\n- Reserved references to particular ages: The section does not alter the effect of an express reference to a particular age in an enactment or instrument (section 5(3)). If an Act or other instrument explicitly uses a particular age, that explicit age governs.\n- Mental or other incapacity: The Act does not change legal incapacity that comes from causes other than age (for example, insanity or mental infirmity) (section 5(4)).\n- Wills and codicils: A will or codicil executed before the commencing day is not to be treated as made on or after the commencing day merely because a later codicil (made after the commencing day) confirms it (section 5(5)).\n- Money or compensation controlled for minors: Existing court orders or directions about money payable to a minor that referred to attaining 21 years are to be read as referring to attaining 18 years (or, for persons already treated as adults on the commencing day under s.5(1)(b), to that day) (section 5(6)).\n- Employment and industrial instruments excluded: The Act does not change how industrial awards, orders, determinations, agreements, apprenticeship instruments, or statutory provisions about employment conditions operate (section 5(7)). Those instruments continue to operate according to their own age-based rules.\n- Property rights vested before commencement: Any estate, right or interest in real or personal property to which a person became absolutely entitled before the commencing day is not affected by the Act (section 5(8)).\n- Procedural and transitional savings: The Act does not change time limits for bringing proceedings that arose before the commencing day (section 5(10) — with that subsection treated as effective from 1 November 1972 by s.5(11)).\n\n### Who pays, who decides, and what behaviour changes (plain statements with citations)\n\n- Who decides: The executive (by proclamation) decides the commencement day (section 2). That timing can affect which persons are immediately treated as adults (section 5(1)(b)).\n- Who is affected / who pays in a behavioural sense: Individuals who reach 18 after the commencement day gain legal capacity to make contracts, manage their affairs, and hold legal status of an adult for most state laws (section 5(1) and (2)). Third parties (businesses, contracting partners, trustees, courts) will need to treat those 18–20 year-olds as adults unless a specific law or instrument provides otherwise (section 5(2) and (3)).\n- Exceptions where others must continue to act differently: Employers and industrial tribunals continue to apply age rules set out in awards, apprenticeship regulations, or statutory employment provisions (section 5(7)). Entities administering pre-existing orders about money for minors must apply the revised age (18) to those orders (section 5(6)).\n- Compliance and transitional steps: Practitioners preparing or construing wills, trusts, property instruments, litigation claims, or statutory instruments must check whether a particular provision explicitly sets an age, and must apply the savings rules (for estates vested before commencement (s.5(8)), wills/codicils (s.5(5)), and time limits for pre-existing causes of action (s.5(10))).\n\n### Implementation risks, incentives, trade-offs and administrative points to watch\n\n- Discretion over timing: The need for a proclamation (s.2) gives the executive a point of control over when the new rule becomes effective; the precise timing can affect transitional cohorts (s.5(1)(b)).\n- Interaction risk with other laws: Because the Act applies \"in the absence of a definition or of an indication of a contrary intention\" (s.5(2)), the practical effect depends on whether other statutes or instruments explicitly set a different age. That creates a need for cross-checking statutory and instrument language in areas such as family law, property, taxation, or licensing where a different age might be specified (s.5(3)).\n- Targeted exemptions reduce immediate impact on employment regulation: The explicit carve-out for industrial awards, apprenticeship instruments and statutory employment provisions (s.5(7)) means workplaces relying on age-based entitlements or restrictions will continue under the pre-existing specified ages unless those instruments are separately amended.\n- Transitional administrative tasks: Executors, trustees, courts and agencies must treat some existing orders about money payable to minors as maturing at 18 instead of 21 (s.5(6)), and must respect vested property interests predating commencement (s.5(8)). Those are concrete tasks for administrators handling estates, settlements and litigation funds.\n\n### Bottom line\n\n- Mechanically, the Act resets the default legal age of adulthood from 21 to 18 for most state laws and instruments (subject to explicit contrary provisions), clarifies how to compute the moment an age is attained, and contains transitional rules preserving certain prior arrangements (sections 4 and 5). The executive sets the commencement date by proclamation (section 2)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation remains tightly focused on its original purpose: reducing the age of majority from 21 to 18 and managing the transition. The amendments shown (1973 and 1996) are minor technical updates — the 1973 amendment added subsection 5(11) to clarify limitation periods, and the 1996 amendment updated terminology from \"by-law\" to \"local law\" following local government reforms. The omitted Schedule (consequential amendments to other Acts and repeal of the Housing Advances Act) was always intended as transitional machinery, not scope expansion."},"complexity_factors":["Only 5 substantive sections (plus short title and commencement)","4 defined terms in interpretation section","Multiple carve-outs and exceptions (subsections 5(3)-(11)) protecting existing property rights, wills, employment law, and causes of action","Nested conditional logic in section 5 distinguishing between people who turn 18 after commencement vs. those aged 18-20 at commencement","Cross-references to \"laws of the State\" and \"enactments\" requiring understanding of statutory interpretation principles","Deemed operation date in subsection 5(11) creating retrospective effect for limitation periods"],"plain_english_summary":"**What this law does:**\n\nThis law changed the age at which Western Australians become legal adults from **21 to 18**.\n\n**Who it affects:**\n\n- **Young people turning 18** — Once you hit 18, you gain \"full legal capacity\" (the power to sign contracts, vote, sue, be sued, and make decisions without parental consent).\n- **People aged 18-20 when the law started** — They instantly became adults on the day the law began (1 November 1972), even if they were still 18, 19, or 20.\n- **Everyone else** — The law affects how all WA laws and legal documents interpret words like \"adult,\" \"minor,\" \"infant,\" and \"full age.\"\n\n**Key details:**\n\n- **Birthday rule:** You officially turn your new age at the *start* of your birthday, not the end (so you're 18 at 00:01 on your 18th birthday).\n- **Wills and property:** If you already owned property or had rights before the law changed, those stay protected.\n- **Workplace laws:** Industrial awards, apprenticeships, and employment conditions aren't affected — those can still use different age rules.\n- **Mental capacity:** If someone lacks capacity due to mental illness or disability, this law doesn't change that — it only deals with age.\n\n**Why it matters:**\n\nBefore 1972, you weren't a full adult until 21. This law recognised that 18-year-olds could vote (federal voting age dropped to 18 in 1973), fight for their country, and should control their own legal affairs. It brought WA into line with modern expectations of adulthood and simplified the legal transition to adult rights and responsibilities."},"issue_detection":{"absurdities":[],"contradictions":[]},"summary":{"complexity_score":1,"scope_assessment":{"changed":false,"description":"Insufficient content was available to assess whether the Act's scope changed from its original intent. The page returned only a system error message, not the legislative text."},"complexity_factors":["Legislation text was not retrievable — only an error page was returned","No substantive legal provisions are available for analysis","Based on title alone, this type of Act is historically straightforward in scope and drafting","Age of majority legislation of this era typically contained few operative sections"],"plain_english_summary":"## Age of Majority Act 1972 (WA)\n\n**⚠️ Content Unavailable**\n\nThe actual text of this Western Australian legislation could not be retrieved — the source page is no longer available due to system upgrades on the WA legislation website.\n\n**What we can reasonably infer from the title:**\nThe *Age of Majority Act 1972* (WA) almost certainly established **18 as the legal age of adulthood** in Western Australia, replacing the common law age of 21. This type of legislation (passed across Australian states in the early 1970s) typically:\n- Defined when a person becomes a legal adult\n- Gave 18-year-olds full legal capacity (the ability to enter contracts, make their own decisions, etc.)\n- Affected rights and responsibilities across many areas of life (voting, property, marriage consent, etc.)\n\n**What you should do:**\nTo find the current, accurate text of this Act, visit the [WA Legislation website](https://www.legislation.wa.gov.au) and search directly for the Act by name."}},"importantCases":[],"_links":{"self":"/api/acts/age-of-majority-act-1972","history":"/api/acts/age-of-majority-act-1972/history","analysis":"/api/acts/age-of-majority-act-1972/analysis","conflicts":"/api/acts/age-of-majority-act-1972/conflicts","importantCases":"/api/acts/age-of-majority-act-1972/important-cases","documents":"/api/acts/age-of-majority-act-1972/documents"}}