{"id":"C2004A02525","name":"Epidemiological Studies (Confidentiality) Act 1981","slug":"epidemiological-studies-confidentiality-act-1981","collection":"act","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":"148 of 1981","makingDate":null,"administeringDepartment":null,"currentVersion":{"id":7069,"registerId":"commonwealth-C2004A02525-current","compilationNumber":null,"startDate":"2026-03-30","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Short title","content":"#### 1 Short title\n\n  This Act may be cited as the Epidemiological Studies (Confidentiality) Act 1981.","sortOrder":0},{"sectionNumber":"2","sectionType":"section","heading":"Commencement","content":"#### 2 Commencement\n\n  This Act shall come into operation on the day on which it receives the Royal Assent.","sortOrder":1},{"sectionNumber":"3","sectionType":"section","heading":"Interpretation","content":"#### 3 Interpretation\n\n  (1) In this Act, unless the contrary intention appears:\n\n> Commonwealth epidemiological study means an epidemiological study conducted by, or on behalf of, the Commonwealth.\n\n> court includes a tribunal, authority or person having power to require the production of documents or the answering of questions, but does not include the Commonwealth Ombudsman.\n\n> document includes any record of information, however recorded or stored, whether in written or printed form, on film, by electronic means or otherwise and, without limiting the generality of the foregoing, includes an article containing an image produced by photography, x‑rays or otherwise.\n\n> epidemiological study means a study of:\n\n    (a) the incidence or distribution, within the population of a country, or a part of a country, or within a particular group of persons, or within a sample or sub‑sample of such a population or group, of:\n    (i) a disease;\n    (ii) a physical or mental state; or\n    (iii) a condition, circumstance, occurrence, activity, form of behaviour, course of conduct, or state of affairs, that is or may be disadvantageous to, or result in a disadvantage to, the person concerned or to the community; or\n    (b) the factors responsible for such an incidence or distribution;\n  or both, and includes a series of such studies.\n\n> prescribed study means:\n\n    (a) the Vietnam Veterans Study; or\n    (b) a Commonwealth epidemiological study declared by the regulations to be a study to which this Act applies.\n\n> Vietnam Veterans Study means the Commonwealth epidemiological study that commenced in 1980 in relation to:\n\n    (a) persons who were members of the Defence Force at any time between 1 January 1962 and 31 December 1972, whether or not they served in Vietnam; and\n    (b) members of the Australian Public Service who served in Vietnam at any time between 1 January 1962 and 31 December 1972.\n  (2) A reference in this Act to a person who has assisted, or is assisting, in the conduct of an epidemiological study includes a reference to a person who has conducted, or is conducting, or has supervised or is supervising the conduct of, the study but does not include a reference to a person who has assisted, or is assisting, in the conduct of the study by reason only that he or she was or is one of the persons to whom the study related or relates or has provided, or is providing, information about one of the persons (whether himself, herself or another person) to whom the study related or relates.\n  (3) A reference in this Act to information concerning the affairs of a person shall be read as including:\n    (a) a reference to information as to the existence or non‑existence of a document concerning the affairs of a person; and\n    (b) a reference to information relating to the whereabouts of a document concerning the affairs of a person.\n  (4) Unless the contrary intention appears, a reference in this Act to information or a document concerning the affairs of a person includes a reference to information or a document, as the case may be, concerning the affairs of a deceased person.","sortOrder":2},{"sectionNumber":"3A","sectionType":"section","heading":"Application of the Criminal Code","content":"#### 3A Application of the Criminal Code\n\n  Chapter 2 of the Criminal Code applies to all offences against this Act.\n\n> Note: Chapter 2 of the Criminal Code sets out the general principles of criminal responsibility.","sortOrder":3},{"sectionNumber":"4","sectionType":"section","heading":"Secrecy relating to prescribed studies","content":"#### 4 Secrecy relating to prescribed studies\n\n  Subject to sections 5 and 7, a person who has assisted, or is assisting, in the conduct of a prescribed study shall not, either directly or indirectly, except for the purpose of the conduct of that study, make a record of, or divulge or communicate to any person, any information concerning the affairs of another person acquired by him or her by reason of his or her having assisted, or assisting, in the conduct of that study.\n\nPenalty: Imprisonment for 6 months or 10 penalty units.","sortOrder":4},{"sectionNumber":"5","sectionType":"section","heading":"Authorisation of use of documents","content":"#### 5 Authorisation of use of documents\n\n  Notwithstanding section 4, the Minister may, by writing signed by him or her, authorize the giving of access, in a form or forms specified in the instrument of authorization, to documents prepared or obtained in the conduct of a prescribed study to persons assisting in the conduct of another prescribed study, and, where such an authorization is given, it is a defence to a prosecution for a contravention of section 4 that is constituted by the giving of access to a document if the access was given in accordance with the authorization.\n\n> Note: The defendant bears an evidential burden in relation to establishing that the access was given in accordance with the authorization. See subsection 13.3(3) of the Criminal Code.","sortOrder":5},{"sectionNumber":"6","sectionType":"section","heading":"Secrecy relating to certain documents","content":"#### 6 Secrecy relating to certain documents\n\n  Subject to section 7, a person who has assisted, or is assisting, in the conduct of a prescribed study and has been given access, by virtue of an authorization under section 5, to a document prepared or obtained in the conduct of another prescribed study shall not, either directly or indirectly, except for the purpose of the conduct of either of those studies, make a record of, or divulge or communicate to any person, any information concerning the affairs of another person acquired by him or her by reason of his or her having been given access to that document.\n\nPenalty: Imprisonment for 6 months or 10 penalty units.","sortOrder":6},{"sectionNumber":"7","sectionType":"section","heading":"Certain persons may be given information","content":"#### 7 Certain persons may be given information\n\n  Sections 4 and 6 do not prohibit a person who has assisted, or is assisting, in the conduct of a prescribed study from giving information concerning the affairs of another person to:\n    (a) the person who supplied the information;\n    (b) where the information concerns the affairs of only one person—that person;\n    (c) where the information concerns the affairs of 2 or more persons—any of those persons with the consent of the other person, or each other person, whose affairs that information concerns; or\n    (d) a person nominated by a person to whom the information may be given by virtue of paragraph (a), (b) or (c) as a person to whom that information may be given.","sortOrder":7},{"sectionNumber":"8","sectionType":"section","heading":"Documents not to be produced in court etc.","content":"#### 8 Documents not to be produced in court etc.\n\n  (1) A person who has assisted, or is assisting, in the conduct of a prescribed study shall not be required:\n    (a) to produce in a court, or permit a court to have access to, a document prepared or obtained in the course of the conduct of that study, being a document concerning the affairs of another person; or\n    (b) to divulge or communicate to a court any information concerning the affairs of another person acquired by him or her by reason of his or her having assisted, or assisting, in the conduct of that study.\n  (2) A person who has assisted, or is assisting, in the conduct of a prescribed study and has been given access, by virtue of an authorization under section 5, to a document shall not be required:\n    (a) to produce in a court, or permit a court to have access to, that document, being a document concerning the affairs of another person; or\n    (b) to divulge or communicate to a court any information concerning the affairs of another person acquired by him or her by reason of his or her having had, or having, that access.","sortOrder":8},{"sectionNumber":"9","sectionType":"section","heading":"Extension","content":"#### 9 Extension\n\n  Without limiting the generality of sections 4, 6 and 8, those sections extend to a person who has assisted, or is assisting, in the conduct of an epidemiological study:\n    (a) as an officer of the Public Service of a State or of the Northern Territory;\n    (b) as an employee of a body corporate, or of another person, involved in the conduct of the study; or\n    (c) in accordance with a contract for the provision of his or her services;\n  and extend to a person whether or not he or she received or receives, or was or is entitled to receive, remuneration in respect of the assistance provided by him or her.","sortOrder":9},{"sectionNumber":"10","sectionType":"section","heading":"Oaths and declarations of secrecy","content":"#### 10 Oaths and declarations of secrecy\n\n  A person who is, or is about to become, a person to whom section 4 or 6 applies shall, if and when required to do so by the Minister, or by a person authorized in writing by the Minister for the purposes of this section, take an oath, or make an affirmation or declaration, in a manner and form, and before a person, prescribed by the regulations, not to make a record of, or divulge or communicate, information in contravention of this Act.\n\nPenalty: Imprisonment for 6 months or 10 penalty units.","sortOrder":10},{"sectionNumber":"11","sectionType":"section","heading":"Publication of results of studies etc.","content":"#### 11 Publication of results of studies etc.\n\n  (1) Nothing in this Act prohibits the publication of conclusions based on, statistics derived from, or particulars of procedures used in, a prescribed study, but such conclusions, statistics or particulars shall not be published in a manner that enables the identification of an individual person (including a deceased person).\n  (2) In this section, publication, in relation to conclusions, statistics or particulars, includes:\n    (a) the divulging or communication to a court of the conclusions, statistics or particulars; and\n    (b) the production to a court of, or the permitting of a court to have access to, a document containing the conclusions, statistics or particulars.","sortOrder":11},{"sectionNumber":"12","sectionType":"section","heading":"Application","content":"#### 12 Application\n\n  (1) For the purposes of the application of this Act in relation to the Vietnam Veterans Study, this Act extends to information acquired, and documents prepared or obtained, before the commencement of this Act.\n  (2) For the purposes of the application of this Act in relation to a Commonwealth epidemiological study declared by the regulations to be a study to which this Act applies, this Act extends to information acquired, and documents prepared or obtained, before the commencement of those regulations.","sortOrder":12},{"sectionNumber":"13","sectionType":"section","heading":"Regulations","content":"#### 13 Regulations\n\n  The Governor‑General may make regulations, not inconsistent with this Act, prescribing all matters required or permitted by this Act to be prescribed or necessary or convenient to be prescribed for carrying out or giving effect to this Act.","sortOrder":13}],"analysis":{"issue_detection":{"absurdities":[],"contradictions":[]},"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":true,"description":"The Act’s coverage can expand beyond the original Vietnam Veterans Study through regulation and ministerial prescription (s3, s13). Section 12 expressly reaches information and documents obtained before prescription/commencement, and section 9 extends obligations to State officers, contractors and corporate employees — collectively broadening who is covered and the temporal reach of the secrecy regime."},"complexity_factors":["Broad, operational definition of \"epidemiological study\" that can cover many topics and series of studies (s3)","Criminalisation of disclosure with specified penalties and application of Criminal Code Chapter 2 to fault elements (s3A, s4)","Ministerial discretion to authorise inter-study access to documents and a statutory defence dependent on compliance with the written authorisation (s5)","Strict secrecy duties that continue for authorised-access recipients, with parallel offence and penalty structure (s6)","Strong non‑production and witness‑immunity protections for courts and tribunals, subject to limited exceptions (s8)","Wide extension of coverage to State public servants, contractors, corporate employees and unpaid assistants, increasing the regulated population (s9)","Oath/declaration requirement enforceable by the Minister with its own penalty (s10)","Permitted publication confined to non‑identifying aggregated conclusions/statistics, requiring de‑identification judgment (s11)","Retrospective application to materials obtained before commencement for certain studies, raising legacy‑data implications (s12)","Regulation‑making power and the \"prescribed study\" mechanism allow the scope of covered studies to be expanded by regulation (s3, s13)"],"plain_english_summary":"This Act makes records and information collected in particular Commonwealth epidemiological studies confidential: people who assist in those studies must not record or disclose another person’s affairs except to carry out the study (s4), with criminal penalties applying (s3A, s4). The Minister can authorise sharing of study documents between prescribed studies (s5); courts are generally prevented from compelling production or testimony about identifiable study material (s8). Aggregated, non‑identifying results may be published (s11)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation remains tightly focused on its original purpose of protecting confidentiality in epidemiological studies. While the framework allows expansion via regulation to declare additional Commonwealth studies as 'prescribed studies', this was clearly intended from the outset (section 3 definition of 'prescribed study' explicitly contemplates regulation). The Act has not grown beyond health research confidentiality into broader data protection or unrelated fields."},"complexity_factors":["Only 13 sections with straightforward structure","7 defined terms in section 3, mostly intuitive (e.g., 'document', 'court')","Simple conditional logic: general prohibition in section 4, with explicit exceptions in sections 5 and 7","No nested exceptions or complex cross-referencing between Parts (the Act has no Parts)","Minimal amendments apparent: only one modern insertion (section 3A Criminal Code application) disrupting original 1981 structure","Clear offence provisions with consistent penalty structure (6 months or 10 penalty units)","Single purpose legislation without regulatory creep into unrelated areas"],"plain_english_summary":"This law protects the privacy of people who take part in government health studies. It creates strict secrecy rules for anyone working on certain medical research projects—particularly the Vietnam Veterans Study and other Commonwealth epidemiological studies declared by regulation.\n\n**What it does:**\n- **Bans disclosure**: People working on these studies cannot share personal information they learn during the research, except for the study itself. Breaking this rule carries a penalty of up to 6 months in prison or a fine.\n- **Blocks court access**: Courts cannot force researchers to hand over study documents or reveal personal information about participants.\n- **Allows limited sharing**: Researchers can give information back to the person who provided it, to the person the information is about, or to someone nominated by that person (with consent if multiple people are involved).\n- **Permits publication of results**: Study findings can be published as statistics or conclusions, but only if individuals cannot be identified.\n- **Covers contractors and state employees**: The secrecy rules apply not just to federal public servants, but also to state government staff, private contractors, and unpaid volunteers working on the study.\n\n**Who it affects:**\n- Researchers, statisticians, and administrators working on prescribed epidemiological studies\n- Vietnam veterans and public servants who served in Vietnam (specifically covered by the original Vietnam Veterans Study)\n- Anyone whose personal health or circumstances are studied in these research projects\n\n**Why it matters:**\nThis law encourages people to participate in sensitive health research by guaranteeing their personal details won't be exposed in court cases, leaked to third parties, or used against them. It balances the need for public health research with strong privacy protections, ensuring researchers can study disease patterns without betraying individual trust."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The Act's scope remains consistent with its original intent: protecting participant confidentiality in the Vietnam Veterans Study and analogous Commonwealth health research studies. The regulatory extension mechanism was clearly contemplated from the outset and does not represent a departure from the original purpose. No evidence of scope creep beyond the founding objective."},"complexity_factors":["Multiple interlocking secrecy provisions across sections 4, 6, and 8 that must be read together","Broad and technical definition of 'epidemiological study' covering disease, mental states, and socially harmful behaviours","Distinction between persons who 'assisted' in a study versus participants — requires careful reading of subsection 3(2)","Expansive definition of 'document' and 'court' with specific carve-outs (e.g. Commonwealth Ombudsman excluded)","Retrospective application to pre-commencement information (section 12) adds a temporal complexity layer","Interaction with Criminal Code Chapter 2 principles and evidential burden provisions (section 3A and note to section 5)","Regulatory extension mechanism means scope can expand without primary legislation amendment"],"plain_english_summary":"This Act shields the privacy of participants in specified Commonwealth epidemiological studies (notably the Vietnam Veterans Study). It bars study workers from disclosing or recording personal information except for study purposes, prevents courts or authorities from compelling disclosure, and allows publication only in non‑identifying form.\n\nParticipants may access their own data or consent to disclosure; the Minister can permit inter‑study sharing and require secrecy oaths. Breaches are criminally punishable (up to 6 months’ jail or a fine)."}},"importantCases":[],"_links":{"self":"/api/acts/epidemiological-studies-confidentiality-act-1981","history":"/api/acts/epidemiological-studies-confidentiality-act-1981/history","analysis":"/api/acts/epidemiological-studies-confidentiality-act-1981/analysis","conflicts":"/api/acts/epidemiological-studies-confidentiality-act-1981/conflicts","importantCases":"/api/acts/epidemiological-studies-confidentiality-act-1981/important-cases","documents":"/api/acts/epidemiological-studies-confidentiality-act-1981/documents"}}