The short answer

Defence Amendment (Sexual Assault Prevention, Intervention and Response Commission) Bill 2025: Jacqui Lambie's proposed Defence oversight body

The Defence Amendment (Sexual Assault Prevention, Intervention and Response Commission) Bill 2025 is a private senator's bill introduced by Senator Jacqui Lambie that proposes to amend the Defence Act 1903 to establish the Sexual Assault Prevention, Intervention and Response Commission (SAPIRC) as an independent statutory authority. The Commission would oversee the Australian Defence Force's prevention of, response to, and handling of sexual assault and related misconduct within the military. The bill is before the Senate and, as a private senator's bill, its passage depends on securing Government or crossbench support.

This is a federal system guide. State constitutions, parliaments and local-government laws can allocate comparable functions differently.

The useful question is not only “what is the rule?” but also “who administers it, which document controls it, and when might it change?” That distinction prevents an accurate general explanation from becoming wrong advice in a particular election, chamber or policy setting.

Evidence review

What the bill proposes at a glance

The Defence Amendment (Sexual Assault Prevention, Intervention and Response Commission) Bill 2025 is a private senator's bill introduced in the Senate by Senator Jacqui Lambie (Jacqui Lambie Network, Tasmania). The bill proposes to amend the Defence Act 1903 to establish a new independent statutory authority: the Sexual Assault Prevention, Intervention and Response Commission, abbreviated as SAPIRC.

The Commission would sit outside the Australian Defence Force's chain of command and would be tasked with oversight of how the ADF prevents, identifies, and responds to sexual assault and sexual misconduct within the military. The bill is currently before the Senate. As a private senator's bill, it does not have the backing of the Government, and its passage through Parliament is not assured.

The bill's title—specifically the words 'Prevention, Intervention and Response'—signals three dimensions of the Commission's proposed mandate: proactive measures to reduce the incidence of sexual assault in the ADF (prevention), mechanisms for early identification and support of affected personnel (intervention), and oversight of the fairness and effectiveness of the ADF's response when incidents occur (response).

Evidence review

The context: sexual assault in the Australian Defence Force

Senator Lambie's bill does not arise in a vacuum. The ADF has been the subject of sustained public attention and multiple inquiries concerning its handling of sexual assault, harassment, and misconduct. The most significant recent external review is the Royal Commission into Defence and Veteran Suicide, which delivered its final report in September 2024 and addressed, among other issues, the connection between sexual trauma in military service and subsequent mental health outcomes and suicidality.

Prior to the Royal Commission, the Australian Human Rights Commission conducted the Review into the Treatment of Women in the Australian Defence Force (the Broderick Review, 2011-2014), and the Defence Abuse Response Taskforce (the DART, 2012-2016) examined historical complaints of sexual and other abuse in Defence. The Inspector-General of the Australian Defence Force (IGADF) has also conducted inquiries into specific allegations and institutional culture.

Despite these reviews and the reforms that followed, concerns persist that the ADF's internal processes for handling sexual assault complaints are not sufficiently independent, that victims face barriers to reporting, and that outcomes—both for victims and for perpetrators—are inconsistent and lack transparency. Senator Lambie, a former ADF member herself, has been a prominent parliamentary advocate on these issues and has argued that only an external, independent, statutory commission can provide the necessary oversight.

Evidence review

How the Commission would be structured and what powers it would have

The bill would amend the Defence Act 1903 to insert a new Part establishing SAPIRC as a statutory authority. Based on the structure of comparable Commonwealth statutory authorities, the Commission would be headed by a Commissioner (or a small panel of Commissioners) appointed by the Governor-General on the recommendation of the Minister for Defence. The Commissioner would hold office for a fixed term and would be removable only on specified grounds, consistent with the independence protections afforded to similar office-holders such as the Inspector-General of the ADF or the Commonwealth Ombudsman.

The Commission would be vested with a range of functions. These would likely include: receiving and assessing complaints of sexual assault within the ADF; monitoring the ADF's own investigative and disciplinary processes in sexual assault matters; conducting own-motion inquiries into systemic issues relating to sexual assault prevention and response; making recommendations to the Chief of the Defence Force and the Minister for Defence; reporting to Parliament through an annual report; and engaging in education and prevention activities within Defence.

Critically, SAPIRC would not replace the ADF's internal investigative and disciplinary processes. Rather, it would sit alongside them as an external oversight body. It would not prosecute offences (that remains the role of the Commonwealth Director of Public Prosecutions or military prosecutors) or impose disciplinary sanctions (that remains the role of courts martial and Defence Force magistrates). Its role would be to ensure that those processes operate fairly, effectively, and transparently, and to identify where systemic reform is needed.

Evidence review

How this differs from existing oversight mechanisms

The ADF is already subject to multiple oversight mechanisms relevant to sexual assault. The Inspector-General of the ADF can inquire into matters concerning the military, including sexual misconduct. The Commonwealth Ombudsman can investigate complaints about the ADF's administrative actions. The Australian Human Rights Commission can inquire into systemic discrimination and has previously done so in relation to the treatment of women in Defence. And the Australian Federal Police and Commonwealth Director of Public Prosecutions handle criminal investigations and prosecutions of sexual offences committed by ADF members.

What SAPIRC would add—according to the bill's rationale—is a dedicated, specialised body focused solely on sexual assault prevention, intervention, and response, with the statutory independence and resources to develop deep expertise in this complex area. Unlike the IGADF, which is part of the Defence portfolio and reports to the Chief of the Defence Force, SAPIRC would be an independent statutory authority reporting to the Minister and directly to Parliament.

The bill also responds to a recurring recommendation from multiple inquiries: that external oversight of the ADF's handling of sexual misconduct should be strengthened and made more transparent. Whether a new standalone commission is the most effective mechanism, as opposed to expanding the powers of existing bodies or creating a specialist division within an existing institution, is a matter of policy debate that the Senate would consider in evaluating the bill.

Evidence review

Constitutional and jurisdictional considerations

The bill relies on the Commonwealth's defence power under section 51(vi) of the Constitution, which authorises the Parliament to make laws with respect to 'the naval and military defence of the Commonwealth and of the several States.' The regulation of the ADF, including oversight of its internal processes, falls squarely within this head of power.

A key jurisdictional question is the extent to which SAPIRC's mandate would extend to ADF members who commit sexual assaults outside the military context—for example, off-base and off-duty. The bill is likely to focus on sexual assault within the ADF as an institution: conduct that occurs in the course of a person's service, that involves ADF members, or that engages the ADF's duty of care to its personnel. Criminal conduct by ADF members that is unrelated to their service would remain a matter for civilian police and prosecutors.

The bill must also navigate the boundary between Commonwealth and state criminal jurisdiction. Sexual assault is primarily an offence under state and territory criminal law, not Commonwealth law. The ADF's jurisdiction over its members for service-related offences sits alongside, not in place of, state and territory criminal jurisdiction. SAPIRC's oversight role would need to respect this division and ensure it does not interfere with ongoing state or territory criminal investigations or prosecutions.

Evidence review

Parliamentary status and prospects

The bill is a private senator's bill and is before the Senate. Private senators' bills face similar hurdles to private members' bills: they are allocated limited debate time, they do not have the Government's drafting resources or political support, and they must secure a majority of votes on the floor of the Senate to pass.

Senator Lambie's political position as a crossbench senator from Tasmania gives her a platform but does not guarantee legislative success. The Jacqui Lambie Network currently holds two Senate seats (Senator Lambie and one other), meaning the bill would need support from Government, Opposition, or other crossbench senators to pass.

The Government's position on the bill is a critical factor. The Government may support the bill, in which case it could be adopted as a Government measure. The Government may oppose the bill, which would affect its prospects of a vote. The Government may alternatively announce its own response to the issue — such as a different oversight model — that could supersede the bill. The Government has previously indicated support for strengthening external oversight of the ADF in response to the Royal Commission into Defence and Veteran Suicide; the form that any legislative response would take is a matter for government decision.

Evidence review

What comes next

The bill is before the Senate and awaits debate. The Senate may refer it to the Senate Foreign Affairs, Defence and Trade Legislation Committee for inquiry, which would provide a formal mechanism for the ADF, victim-survivor advocacy groups, legal experts, and other stakeholders to make submissions. A committee inquiry would also allow scrutiny of the bill's drafting, its interaction with existing oversight mechanisms, and its resource implications. If the bill passes the Senate, it would proceed to the House of Representatives for consideration. If it lapses at the end of the current Parliament, Senator Lambie could reintroduce it in the next Parliament.

Common questions

Before you rely on the answer

What would SAPIRC actually do?

If established, the Sexual Assault Prevention, Intervention and Response Commission would be an independent statutory authority overseeing how the Australian Defence Force prevents and responds to sexual assault. Its functions would include receiving and assessing complaints, monitoring ADF investigative and disciplinary processes, conducting own-motion inquiries into systemic issues, making recommendations to the Chief of the Defence Force and the Minister, and reporting to Parliament. It would be an oversight body that sits outside the ADF chain of command—it would not itself prosecute offences or impose disciplinary sanctions.

Doesn't the ADF already have oversight bodies for this?

Yes. The Inspector-General of the ADF can investigate military matters including sexual misconduct, the Commonwealth Ombudsman can review ADF administrative actions, the Australian Human Rights Commission can inquire into systemic discrimination, and criminal prosecutions are handled by the AFP and CDPP. SAPIRC would differ in being a dedicated, specialist body focused exclusively on sexual assault, with statutory independence from the Defence chain of command. Supporters argue that existing bodies lack the specialisation and independence needed; critics may argue that expanding existing mechanisms would be more efficient.

What is the legislative path for this private senator's bill?

As a private senator's bill, it must pass the Senate and then the House of Representatives. The Senate may debate the bill on a private senators' business day or refer it to a committee for inquiry. The Government may indicate whether it supports the bill; this would determine whether it proceeds with government scheduling priority. Even if the bill does not proceed in its current form, the issues it raises may influence government policy on Defence oversight.

Source spine

Primary material used for this guide

Review trigger: Bill is debated in the Senate, referred to committee, passes Senate, or lapses; Government announces alternative oversight model

Archive note: This article reviews the Defence Amendment (Sexual Assault Prevention, Intervention and Response Commission) Bill 2025 as introduced by Senator Jacqui Lambie. It is not a review of enacted law. The bill is a private senator's bill before the Senate and has not been passed by Parliament. This article was published on 17 July 2026 and reflects the bill's status as at that date.

Primary links are provided without affiliate or tracking parameters. Confirm that the source still applies to the bill, sitting date, jurisdiction or reporting period before relying on it.