{"id":"C2004A01094","name":"Petroleum (Timor Sea Treaty) Act 2003","slug":"petroleum-timor-sea-treaty-act-2003","collection":"act","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":"9 of 2003","makingDate":null,"administeringDepartment":null,"currentVersion":{"id":24982,"registerId":"commonwealth-C2004A01094-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Part 1","sectionType":"part","heading":"Preliminary","content":"## Part 1—Preliminary","sortOrder":0},{"sectionNumber":"1","sectionType":"section","heading":"Short title","content":"#### 1 Short title\n\n This Act may be cited as the Petroleum (Timor Sea Treaty) Act 2003.","sortOrder":1},{"sectionNumber":"2","sectionType":"section","heading":"Commencement","content":"#### 2 Commencement\n\n (1) Each provision of this Act specified in column 1 of the table commences, or is taken to have commenced, on the day or at the time specified in column 2 of the table.\n\n```html\n

Commencement information

Column 1

Column 2

Column 3

Provision(s)

Commencement

Date/Details

1. Sections 1 and 2 and anything in this Act not elsewhere covered by this table

The day on which this Act receives the Royal Assent

2 April 2003

2. Sections 3 to 5

20 May 2002

20 May 2002

3. Sections 6 and 7

The day on which this Act receives the Royal Assent

2 April 2003

4. Subsection 8(1)

20 May 2002

20 May 2002

5. Subsection 8(2)

The day on which this Act receives the Royal Assent

2 April 2003

6. Sections 9 to 25

20 May 2002

20 May 2002

7. Schedule 1

20 May 2002

20 May 2002

\n```\n\n> Note: This table relates only to the provisions of this Act as originally passed by the Parliament and assented to. It will not be expanded to deal with provisions inserted in this Act after assent.\n\n (2) Column 3 of the table is for additional information that is not part of this Act. This information may be included in any published version of this Act.","sortOrder":2},{"sectionNumber":"5","sectionType":"section","heading":"Definitions","content":"#### 5 Definitions\n\n (1) In this Act, unless the contrary intention appears:\n\n> JPDA means the Joint Petroleum Development Area established in Article 3 of the Treaty.\n\n> Treaty means the Timor Sea Treaty between Australia and East Timor done at Dili on 20 May 2002, as in force immediately before the commencement of Schedule 1 to the Timor Sea Maritime Boundaries Treaty Consequential Amendments Act 2019.\n\n> Note: The Timor Sea Treaty is in Australian Treaty Series 2003 No. 13 (\\[2003\\] ATS 13) and could in 2019 be viewed in the Australian Treaties Library on the AustLII website (http://www.austlii.edu.au).\n\n (2) Unless the contrary intention appears, a word or an expression that is defined in the Treaty has, when used in this Act, the same meaning as in the Treaty.","sortOrder":3},{"sectionNumber":"Part 4","sectionType":"part","heading":"Transitional provisions","content":"## Part 4—Transitional provisions","sortOrder":4},{"sectionNumber":"21","sectionType":"section","heading":"Definitions","content":"#### 21 Definitions\n\n In this Part:\n\n> former Petroleum Mining Code has the same meaning as Petroleum Mining Code had in the Petroleum (Timor Gap Zone of Cooperation) Act 1990 immediately before 20 May 2002.\n\n> Joint Authority has the same meaning as it had in the Petroleum (Timor Gap Zone of Cooperation) Act 1990 immediately before 20 May 2002.\n\n> new Petroleum Mining Code means the Petroleum Mining Code referred to in Article 7 of the Treaty (including the interim code referred to in paragraph 7(b) of the Treaty).","sortOrder":5},{"sectionNumber":"22","sectionType":"section","heading":"Retrospective effect of authorities and production sharing contracts","content":"#### 22 Retrospective effect of authorities and production sharing contracts\n\n If the Designated Authority determines that:\n (a) an approval the Designated Authority grants to a person to prospect for petroleum, or to undertake petroleum activities, in the JPDA; or\n (b) a production sharing contract the Designated Authority enters into with a person;\n is to be taken to have had effect on and from 20 May 2002, the approval or contract is taken, for the purposes of this Act, to have had effect on and from that day.","sortOrder":6},{"sectionNumber":"23","sectionType":"section","heading":"Interim Petroleum Mining Code","content":"#### 23 Interim Petroleum Mining Code\n\n If the Joint Commission:\n (a) adopts an interim code under paragraph 7(b) of the Treaty; and\n (b) determines that the interim code is to be taken to have had effect on and from 20 May 2002;\n the interim code is taken, for the purposes of this Act, to have had effect on and from that day.","sortOrder":7},{"sectionNumber":"24","sectionType":"section","heading":"Actions taken under former Petroleum Mining Code","content":"#### 24 Actions taken under former Petroleum Mining Code\n\n (1) Anything that the Joint Authority purported to do on or after 20 May 2002 for the purposes of the former Petroleum Mining Code is taken, for the purposes of this Act, to have been done by the Designated Authority for the purposes of the new Petroleum Mining Code.\n (2) Without limiting subsection (1), any regulations or directions the Joint Authority purported to issue on or after 20 May 2002 under the former Petroleum Mining Code are taken, for the purposes of this Act, to have been issued by the Designated Authority under the new Petroleum Mining Code.\n (3) Anything that an inspector appointed under the former Petroleum Mining Code purported to do on or after 20 May 2002 for the purposes of the former Petroleum Mining Code is taken, for the purposes of this Act, to have been done by an inspector appointed under the new Petroleum Mining Code for the purposes of the new Petroleum Mining Code.","sortOrder":8},{"sectionNumber":"Part 5","sectionType":"part","heading":"Regulations","content":"## Part 5—Regulations","sortOrder":9},{"sectionNumber":"25","sectionType":"section","heading":"Regulations","content":"#### 25 Regulations\n\n (1) The Governor‑General may make regulations prescribing all matters necessary or convenient to be prescribed for carrying out or giving effect to this Act.\n (2) The regulations may prescribe penalties not exceeding a fine of 10 penalty units for offences against regulations made for the purposes of Part 3.","sortOrder":10}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"Based on the text supplied, the Act operates to implement the Timor Sea Treaty, set commencement dates, provide transitional rules between the former and new Petroleum Mining Codes, and confer regulation‑making power. The supplied provisions and the commencement table explicitly relate to the Act as originally passed (s2 note). There is no text in the supplied material indicating a change of scope from the Act's original operative design."},"complexity_factors":["References to an external international instrument (the Treaty) for key definitions and the new Petroleum Mining Code (s5, s21) — requires cross‑reference to another text to interpret terms.","Retrospective effect powers allowing administrative backdating of approvals, contracts and interim codes (s22–s23) — affects timing of rights and liabilities and raises interpretive/legal‑certainty issues.","Transfer and recognition of actions taken by a former authority to the new designated authority (s24) — creates transition mapping between two regulatory regimes.","Delegation of operational detail to regulations (s25) — substantive requirements and penalties depend on future subordinate instruments.","Staggered and specific commencement dates in a table (s2) — requires care to know when particular provisions applied."],"plain_english_summary":"What this Act does (mechanically)\n\n- Implements and gives domestic legal effect to the Timor Sea Treaty by linking Australian law to terms and definitions in that Treaty (see section 5). The Act treats words defined in the Treaty as having the same meaning when used in this Act (s5(2)).\n- Sets out when parts of the Act come into force using a commencement table that lists specific dates for different provisions (s2). The table includes entries dating parts of the Act to 20 May 2002 and to 2 April 2003 (s2 table). The Act also notes that the table covers only the provisions as originally passed (s2 note).\n- Provides transitional rules to bridge between the former Petroleum Mining Code and the new Petroleum Mining Code referred to in the Treaty (Part 4; in particular, sections 21–24). These rules: \n - Define the former and new Petroleum Mining Code (s21). \n - Allow the Designated Authority to declare that approvals to prospect or production sharing contracts are to be taken to have had effect from 20 May 2002 (s22). \n - Allow the Joint Commission to adopt an interim Petroleum Mining Code and declare that it is to be taken to have had effect from 20 May 2002 (s23). \n - Treat actions, regulations, directions and inspector acts that the former Joint Authority purported to do on or after 20 May 2002 as having been done by the Designated Authority under the new Petroleum Mining Code (s24(1)–(3)).\n- Gives the Governor‑General power to make regulations needed to carry out the Act and to prescribe penalties (s25). Regulations may set penalties up to a fine of 10 penalty units for offences against regulations made for the purposes of Part 3 (s25(1)–(2)).\n\nWho this affects and who decides\n\n- Affected private parties: people or companies who prospect for petroleum, undertake petroleum activities in the Joint Petroleum Development Area (JPDA), or who are parties to production sharing contracts in the JPDA (see s5 definition of JPDA and s22 on approvals/contracts). Those parties may see approvals or contracts treated as having effect from 20 May 2002 if the Designated Authority so determines (s22).\n- Governmental decision‑makers: the Designated Authority (decides retrospective effect for approvals and contracts, s22), the Joint Commission (may adopt and backdate an interim Petroleum Mining Code, s23), and the Governor‑General (may make regulations under the Act, s25).\n- Inspectors and regulators: actions and authorisations the former Joint Authority took on or after 20 May 2002 are treated as if taken by the Designated Authority under the new code (s24), preserving continuity of regulatory authority.\n\nWhy it matters (mechanisms, incentives, trade‑offs and implementation points)\n\n- Legal continuity and certainty for authorisations: by allowing the Designated Authority and the Joint Commission to declare that approvals, contracts or an interim code operate from 20 May 2002, the Act mechanically backdates legal effect. The direct mechanism is administrative determination (s22, s23). That can preserve or change legal rights and obligations for the persons affected from that earlier date.\n- Concentrated beneficiaries: the immediate, concrete beneficiaries of any retrospective declarations will be the specific persons or contractors whose approvals or contracts are backdated (s22). The Act does not describe compensatory payments or offsetting measures; it only sets the legal effect (s22–s23).\n- Administrative discretion and decision cost: the power to decide retrospective effect is given to the Designated Authority (for approvals/contracts, s22) and the Joint Commission (for the interim code, s23). Those are discretionary administrative acts that determine legal timing and status for private parties.\n- Compliance and enforcement burden: affected parties must comply with the new Petroleum Mining Code and any regulations made under the Act (s21, s24, s25). The regulations may create offences with fines up to 10 penalty units for contraventions of regulations made for Part 3 (s25(2)). The Act does not itself set the content of those regulatory obligations—those are supplied by regulation and the Petroleum Mining Code (s25(1), s21).\n- Transitional simplification: the Act treats actions taken by the former Joint Authority on or after 20 May 2002 as done by the designated national authority under the new code, which is a mechanical transfer of legal acts and purported regulatory instruments (s24(1)–(3)). This reduces the need to re‑issue or re‑do those acts but means their legal validity is preserved by statutory fiat.\n- Reliance on an external instrument: several key meanings and the new Petroleum Mining Code are defined by reference to the Treaty (s5, s21). That creates interpretive dependence on the Treaty text for operation of the Act (s5(2)).\n- Risks and trade‑offs: the backdating mechanism (s22–s23) can change the temporal allocation of rights and liabilities; this may affect third parties and creates a reliance on administrative declarations for legal effect. The Act reserves to the executive (via the Governor‑General) the power to fill in operational detail by regulation (s25), which centralises rule‑making but leaves specifics to subordinate instruments.\n\nConcrete citations\n\n- Definitions and Treaty linkage: s5 (including s5(2)).\n- Commencement and timing detail: s2 (commencement table and note). \n- Transitional definitions: s21. \n- Retrospective effect for approvals/contracts: s22. \n- Interim Petroleum Mining Code and its backdating: s23. \n- Treatment of actions under the former code as actions under the new code: s24(1)–(3). \n- Regulation‑making power and penalties: s25(1)–(2)."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"The Act remains tightly focused on its original purpose: giving domestic legal effect to the Timor Sea Treaty and managing the transition from the earlier Timor Gap Zone of Cooperation. While later amendments (particularly the 2019 Maritime Boundaries Treaty Consequential Amendments Act) modified the Act to reflect new treaty arrangements, the core scope of facilitating joint petroleum development in the Timor Sea has remained consistent."},"complexity_factors":["Minimal defined terms — only 5 key definitions in section 5 and 3 in Part 4","Heavy reliance on external documents — the Treaty itself and the Petroleum Mining Code are incorporated by reference but not reproduced in the Act","Retrospective operation provisions (sections 22-24) create temporal complexity by validating actions taken before the Act commenced","Cross-referencing to repealed legislation (Petroleum (Timor Gap Zone of Cooperation) Act 1990) for transitional purposes","Staggered commencement dates with some provisions deemed to have commenced in 2002 despite the Act receiving Royal Assent in 2003","Delegation of substantive detail to regulations (section 25) and to treaty-based codes rather than spelling out rules in the Act itself"],"plain_english_summary":"This law gives legal force to a treaty between Australia and East Timor (now Timor-Leste) about sharing oil and gas resources in the Timor Sea. The treaty created a **Joint Petroleum Development Area (JPDA)** — a zone where both countries jointly manage petroleum exploration and production.\n\n**What the Act does:**\n- **Validates the Timor Sea Treaty** in Australian law, making it binding and enforceable domestically\n- **Sets up the legal framework** for petroleum activities (exploration, drilling, production) in the JPDA\n- **Provides transitional rules** to ensure continuity — any permits, contracts, or decisions made under earlier arrangements automatically carry over to the new system\n- **Allows regulations** to be made for detailed operational rules, with fines up to 10 penalty units for breaches\n\n**Who it affects:**\n- Oil and gas companies operating (or wanting to operate) in the JPDA\n- The Australian government bodies responsible for offshore petroleum regulation\n- East Timor, as the joint partner in the treaty arrangement\n\n**Why it matters:**\nThis legislation resolved a long-running dispute between Australia and East Timor over maritime boundaries and resource rights. It allowed petroleum projects like Bayu-Undan to proceed while the two nations negotiated a permanent boundary. The Act was later amended when the 2019 Maritime Boundaries Treaty replaced the 2002 Timor Sea Treaty, but this original version established the cooperative framework that allowed both countries to benefit from Timor Sea resources."},"summary":{"complexity_score":6,"scope_assessment":{"changed":true,"description":"The Act's original scope was to implement the Timor Sea Treaty in full as an ongoing framework for joint petroleum development. However, the definition of 'Treaty' was subsequently amended to freeze it 'as in force immediately before the commencement of Schedule 1 to the Timor Sea Maritime Boundaries Treaty Consequential Amendments Act 2019', indicating the original Treaty arrangement was superseded by a permanent maritime boundary settlement. The Act now primarily serves a transitional and historical function rather than governing ongoing petroleum development under the original joint-zone model."},"complexity_factors":["Implements an international treaty into domestic law, requiring readers to cross-reference the Treaty itself for most substantive obligations","Retrospective commencement dates (some provisions backdated to 20 May 2002, before the Act was even passed in 2003) create temporal complexity","Transitional provisions require understanding two separate legal regimes: the old Timor Gap Zone of Cooperation framework and the new Treaty framework","Interaction with multiple pieces of related legislation (Petroleum (Timor Gap Zone of Cooperation) Act 1990, Timor Sea Maritime Boundaries Treaty Consequential Amendments Act 2019)","Technical petroleum industry terminology embedded in treaty definitions adopted by reference","International law dimension adds a layer not present in purely domestic legislation","The Act has been partially overtaken by subsequent events (2019 maritime boundary treaty), making the current legal position harder to determine from this Act alone"],"plain_english_summary":"## Petroleum (Timor Sea Treaty) Act 2003\n\n### What is this law about?\nThis Act gives legal effect in Australia to the **Timor Sea Treaty** — an agreement between Australia and the newly independent nation of East Timor (Timor-Leste), signed on 20 May 2002. The Treaty established a **Joint Petroleum Development Area (JPDA)**: a shared offshore zone in the Timor Sea where both countries agreed to jointly manage and share the revenue from oil and gas production.\n\n### Who does it affect?\n- **Oil and gas companies** operating (or wanting to operate) in the Timor Sea's joint development zone\n- **Government authorities** that regulate petroleum exploration and production in that area\n- Potentially, **Australian taxpayers and consumers**, as it governs how a significant energy resource is administered\n\n### What does it actually do?\n\n**1. Establishes the legal framework**\nIt makes the Treaty part of Australian domestic law, meaning Australian courts and regulators must follow it.\n\n**2. Defines who's in charge**\nIt sets up a \"Designated Authority\" — the body responsible for approving petroleum exploration licences and production sharing contracts (agreements where companies get a share of oil/gas profits in exchange for doing the work and bearing the costs).\n\n**3. Handles the messy transition from the old arrangement**\nBefore East Timor's independence, a similar zone existed under the *Petroleum (Timor Gap Zone of Cooperation) Act 1990* with Indonesia. The 2003 Act includes provisions to:\n- Treat actions taken under the *old* legal framework (after 20 May 2002) as if they were done under the *new* framework — so no one falls through a legal gap\n- Allow approvals and contracts to be backdated to 20 May 2002 (the date East Timor became independent and the Treaty was signed)\n- Recognise an interim Petroleum Mining Code (a set of rules governing how oil and gas activities must be conducted) until the permanent one was in place\n\n**4. Regulation-making power**\nIt allows the Governor-General to make detailed regulations to implement the Act, with small fines (up to 10 penalty units — around $330 at the time) for breaching those regulations.\n\n### Why does this matter?\nThe Timor Sea contains **significant oil and gas reserves**, including the Bayu-Undan and Greater Sunrise fields. This Act determined how billions of dollars in petroleum revenue would be managed and shared between Australia and one of the world's newest and poorest nations. Note: the Treaty itself was later superseded by a permanent maritime boundary treaty in 2019.\n\n### Bottom line\nIf you're an oil or gas company working in the Timor Sea joint zone, this Act (and the Treaty it implements) defines the rules you operate under. For everyone else, it's the legal plumbing that ensured petroleum activities in this shared zone continued smoothly when East Timor became independent."},"issue_detection":{"absurdities":[{"type":"retroactive_impossibility","section":"2 (Commencement table, items 2, 4, 6, 7)","severity":"high","reasoning":"Sections 3–5, subsection 8(1), sections 9–25, and Schedule 1 are all given a commencement date of 20 May 2002. The Act itself received Royal Assent on 2 April 2003. Parliament cannot logically cause provisions to 'commence' on a date almost a year before those provisions were enacted. While retrospective operation is legally permissible under Australian constitutional law in many circumstances, it creates a genuine logical impossibility: the law purports to have been operative during a period when it did not yet exist, meaning any conduct regulated by those provisions during that gap period was simultaneously governed and not governed by law. Section 5 (Definitions), which is one of the retrospectively commenced provisions, defines terms used throughout the Act — including 'JPDA' and 'Treaty' — yet those definitions could not have existed before the Act was passed.","confidence":0.92,"description":"Multiple provisions of an Act passed on 2 April 2003 are deemed to have commenced on 20 May 2002 — nearly 11 months before the Act existed."},{"type":"other","section":"5(1) — Definition of 'Treaty'","severity":"medium","reasoning":"By locking the definition of 'Treaty' to the version in force immediately before a 2019 amendment, the Act creates a statutory construct that may no longer correspond to any real, operative international instrument. If the Treaty has been superseded or amended by the 2019 Act, the Act's foundational reference document is a legal ghost — a version of a treaty that no longer has any international legal force. This means the Act could be administering rights and obligations under a treaty text that neither Australia nor Timor-Leste currently recognises as binding, producing a divergence between domestic statutory operation and actual international obligations.","confidence":0.82,"description":"The Treaty is defined as the Timor Sea Treaty 'as in force immediately before the commencement of Schedule 1 to the Timor Sea Maritime Boundaries Treaty Consequential Amendments Act 2019', effectively freezing the Treaty's content at a past moment and potentially diverging from the Treaty's actual current text."},{"type":"retroactive_impossibility","section":"24(1)–(3)","severity":"high","reasoning":"Section 24 deems anything the Joint Authority 'purported to do on or after 20 May 2002' under the former Petroleum Mining Code to have been done by the Designated Authority under the new Petroleum Mining Code. The new Petroleum Mining Code is defined in s.21 as that referred to in Article 7 of the Treaty, including any interim code. The Act itself commenced on 2 April 2003. Therefore, between 20 May 2002 and 2 April 2003, actors were purporting to act under a former code that had expired, while the new code and the Act deeming their actions valid did not yet exist. The provision essentially requires retroactive compliance with a legal standard that was unknowable at the time of acting, and simultaneously validates conduct under a law that had no existence during the relevant period.","confidence":0.88,"description":"Actions 'purported' to be done under a defunct legal framework are deemed to have been validly done under a framework that did not yet exist at the time those actions were taken."},{"type":"retroactive_impossibility","section":"23","severity":"medium","reasoning":"Section 23 allows the Joint Commission to retrospectively apply an interim Petroleum Mining Code to the period from 20 May 2002. There is no constraint on how long after that date the interim code might be adopted. If the interim code were adopted in, say, late 2003 or 2004, the deeming provision would retroactively impose regulatory obligations or validate regulatory decisions across a potentially extended period when no such code actually existed. Parties operating in the JPDA during that gap period could not have known what code applied to them, making genuine compliance logically impossible.","confidence":0.8,"description":"An interim code adopted after 20 May 2002 can be deemed to have had effect from 20 May 2002, meaning the code governs conduct that occurred before the code was adopted."},{"type":"retroactive_impossibility","section":"22","severity":"medium","reasoning":"Section 22 empowers the Designated Authority to determine that an approval or production sharing contract 'is to be taken to have had effect on and from 20 May 2002'. This grants a broad discretionary power to retrospectively create legal relations without any temporal limit or procedural safeguard specified in the provision. A contract entered on, say, 1 January 2004 could be deemed operative for over 19 months prior to its actual execution. This creates logical difficulties: parties' rights and liabilities during the retroactive period are rewritten after the fact, potentially to the detriment of third parties who had no notice of the prospective approval or contract.","confidence":0.78,"description":"The Designated Authority can grant an approval or enter a contract after Royal Assent (2 April 2003) and deem it to have had effect since 20 May 2002, retroactively creating rights and obligations that did not exist at the time."},{"type":"circular_definition","section":"5(2)","severity":"low","reasoning":"Section 5(2) imports definitions from the Treaty into the Act. However, the Treaty is itself defined in s.5(1) as the Treaty 'as in force immediately before' a 2019 commencement event. If the Treaty's own definitions changed between its original execution and the 2019 cut-off, the Act incorporates whatever the frozen version provides, which may differ from both the original Treaty text and the current international understanding. This creates a layered interpretive circularity: the Act's meaning depends on the Treaty, the Treaty's meaning is fixed at a specific historical moment defined by the Act, and that frozen Treaty may define terms differently from how both Australia and Timor-Leste currently understand them.","confidence":0.65,"description":"Words defined in the Treaty have the same meaning 'in this Act' as in the Treaty, but the Treaty itself is defined as a frozen historical version — creating a potential recursive definitional problem."}],"contradictions":[{"severity":"high","section_a":"2 (Commencement table, item 1 — Sections 1 and 2 commence on 2 April 2003)","section_b":"2 (Commencement table, items 2 and 6 — Sections 3–5 and 9–25 commence on 20 May 2002)","confidence":0.85,"description":"Section 2 itself commences on 2 April 2003, but section 2 purports to give legal effect to commencement dates of 20 May 2002 for other provisions — meaning the commencement provision that creates the retrospective effect did not exist during the period it retroactively governs."},{"severity":"medium","section_a":"21 — Definition of 'new Petroleum Mining Code' (referred to in Article 7 of the Treaty, including the interim code)","section_b":"23 — Interim code may be adopted and then deemed to have had effect from 20 May 2002","confidence":0.72,"description":"Section 21 defines the new Petroleum Mining Code as including the interim code referred to in paragraph 7(b) of the Treaty, treating them as part of a unified concept. Section 23, however, treats the interim code as a distinct instrument that requires separate adoption by the Joint Commission and a separate deeming determination. If the interim code is already part of the 'new Petroleum Mining Code' by definition, it is contradictory to require it to be separately adopted and separately deemed operative."},{"severity":"medium","section_a":"24(1) — Actions by the Joint Authority on or after 20 May 2002 are deemed to be actions by the Designated Authority","section_b":"21 — 'Joint Authority' is defined as it had meaning in the Petroleum (Timor Gap Zone of Cooperation) Act 1990 immediately before 20 May 2002","confidence":0.8,"description":"The Joint Authority is defined by reference to a repealed Act as it stood immediately before 20 May 2002 — implying the Joint Authority ceased to exist or lost its legal character on that date. Yet section 24 attributes legal consequences to actions the Joint Authority 'purported to do on or after 20 May 2002', which is the very period during which the Joint Authority no longer had a valid legal basis for action. The provision thus simultaneously acknowledges that the Joint Authority's post-20-May-2002 actions were legally questionable ('purported') while deeming them valid — without resolving the underlying source of authority."},{"severity":"medium","section_a":"25(2) — Regulations may prescribe penalties not exceeding 10 penalty units for offences against regulations made for Part 3","section_b":"2 (Commencement table, item 6 — Sections 9 to 25, which includes Part 3 provisions, commenced 20 May 2002)","confidence":0.7,"description":"The penalty-prescribing power in s.25(2) relates to Part 3, which is deemed to have commenced on 20 May 2002. However, s.25 itself (as part of sections 9–25) is also deemed to have commenced on 20 May 2002, meaning the regulation-making power and the penalty power retrospectively applied during a period when neither the regulations nor the enforcement mechanisms could have existed. Any regulations made after Royal Assent that are purportedly given retrospective effect could impose penalty liability on conduct occurring before either the Act or the regulations were enacted."}]}},"importantCases":[],"_links":{"self":"/api/acts/petroleum-timor-sea-treaty-act-2003","history":"/api/acts/petroleum-timor-sea-treaty-act-2003/history","analysis":"/api/acts/petroleum-timor-sea-treaty-act-2003/analysis","conflicts":"/api/acts/petroleum-timor-sea-treaty-act-2003/conflicts","importantCases":"/api/acts/petroleum-timor-sea-treaty-act-2003/important-cases","documents":"/api/acts/petroleum-timor-sea-treaty-act-2003/documents"}}