
Obstructing the course of justice is a significant criminal offence in Australia because it interferes with the proper functioning of the courts, the investigative process and the administration of the law. The justice system relies on truthful information, accessible evidence and compliance with legal obligations. When someone disrupts these processes, the consequences can extend far beyond the immediate case and may affect the wider administration of justice.
This article outlines what the offence involves, why it is taken seriously, and what steps individuals should consider if they face allegations or become a target of investigation.
What Does Obstructing the Course of Justice Mean?
Obstructing the course of justice refers to conduct that interferes, or attempts to interfere, with the processes that allow courts, police, investigators and other authorities to carry out their legal functions. The act may occur during an investigation, at trial or after a matter has concluded, so long as the behaviour has the potential to affect the course of justice.
Although the exact wording of legislation differs across Australian states and territories, the underlying concept remains consistent. The offence generally involves actions that hinder the proper administration of justice, such as misleading police, disrupting court proceedings, tampering with evidence or influencing witnesses. These actions undermine the reliability of evidence and prevent the fair and orderly administration of the law.
Terms such as perverting the course of justice, perverting the course, perverted the course of justice, attempting to pervert the course of justice and obstruction of justice are often used in similar contexts. While not identical, they share the principle that behaviour that disrupts legal processes affects the integrity of the justice system.
How Serious Is This Action?
Interfering with the course of justice is regarded seriously because it threatens the foundation on which the courts operate. The administration of justice relies on accurate evidence, honest participation and compliance with court orders. When these principles are compromised, the legal system’s ability to make fair decisions is weakened.
The seriousness of the offence depends on several factors, including the impact of the conduct, whether it was deliberate, and whether it affected or had the potential to affect the outcome of legal proceedings. Even actions that appear minor may have significant implications if they hinder the progress of an investigation or affect the integrity of court processes.
For example, giving false information to investigators may delay enquiries, while altering documents or influencing a witness can disrupt a trial. Although Australian jurisdictions treat the offence differently, all recognise its importance in protecting the justice system and preventing individuals from attempting to defeat the course of legal proceedings.
Examples of Conduct that May Constitute the Offence
Acts that may amount to obstructing the course of justice include:
- Destroying, concealing or altering evidence to prevent its use in court.
- Encouraging or pressuring a witness to change their statement.
- Providing false details when pulled over by police.
- Assisting someone to evade arrest or avoid fulfilling bail conditions.
- Interfering with digital records relevant to a case.
- Attempting to create false leads to divert investigators.
- Disclosing confidential details that compromise ongoing enquiries.
- Withholding information after learning that you are a target of investigation.
- Interfering with financial records or altering documents may also occur during investigations into fraud offences, where the handling of sensitive information can attract additional scrutiny.
These behaviours may also overlap with offences such as perverting the course of justice, intending to pervert a legal process or attempting to defeat the course of an investigation.
Although each case is assessed on its own facts, courts consider whether the conduct had the potential to disrupt the course of justice, regardless of whether the attempt was successful.
The Fine Line Between Justice and Misunderstanding
When Good Intentions Go Wrong
Not all acts that interfere with legal processes are driven by malicious intent. Many offences arise from misunderstanding, confusion or fear, particularly when individuals attempt to assist someone involved in a case. In these situations, people may not appreciate that seemingly small actions can carry legal consequences.
Examples include:
- Adjusting a written statement to “improve clarity”, not realising that accuracy is essential.
- Collecting or moving items to “help” a family member, inadvertently destroying evidence.
- Encouraging someone to delay attending court, believing that it will cause no harm.
- Trying to explain events differently during interviews, unintentionally altering key details.
Although such behaviour may not be intended to pervert the course of justice, the courts assess the impact and potential consequences. Intent remains relevant, but misunderstanding does not automatically protect someone from a criminal charge.
Related Offences: Contempt of Court
Contempt of court, while distinct from obstructing the course of justice, also undermines the integrity of legal processes. It generally involves disobeying court orders, interrupting court proceedings, or displaying behaviour that shows disrespect toward the court’s authority.
Although contempt differs from obstruction, both offences share the common feature of interfering with the proper administration of justice. Understanding this distinction helps individuals recognise the nature of a criminal charge and the potential consequences. Readers seeking more context about the court process may refer to the article on what happens at a court hearing.
Understanding these distinctions helps individuals identify the nature of a criminal charge and the potential consequences.
Elements the Prosecution Must Prove
To secure a conviction for obstructing the course of justice, prosecutors must typically establish three elements:
1. Identifiable Conduct Occurred
The actions must be clear enough to establish what occurred. Examples include influencing witnesses, misleading authorities, destroying evidence or interfering with documents.
2. The Conduct Had the Potential to Obstruct Justice
The prosecution does not have to prove that the conduct changed the outcome of a matter. It is enough that the behaviour could have affected the administration of justice or disrupted the course of legal proceedings.
3. The Conduct Was Intentional
The person must have intended to carry out the act, even if they did not appreciate that it could pervert or obstruct the course of justice.
Although these elements vary slightly across Australia, the general framework remains similar. Courts consider whether the conduct, in context, had the potential to influence or disrupt lawful processes under the administration of justice.
Penalties and Sentencing Across Australia

Obstructing the course of justice can attract a range of penalties, from fines to imprisonment. These penalties exist to protect the administration of the law and discourage individuals from attempting to defeat the course of legal processes.
When sentencing, courts may consider:
- The seriousness and impact of the conduct.
- Whether the act was deliberate or arose from confusion or panic.
- The extent of the disruption to investigations or court proceedings.
- The involvement of other individuals.
- The accused’s prior criminal history.
- Whether the individual chose to plead guilty at an early stage.
Offences involving deliberate attempts at perverting the course of justice often result in heavier sentences because they involve a clear intention to interfere with the legal system.
Some matters involving contempt for the court may also lead to significant penalties, particularly where behaviour disrupts the authority of the courts or breaches court orders.
Common Situations Where Charges Arise
Charges related to obstruction or perverting the course of justice arise in a wide range of situations, including:
- Altering or withholding documents relevant to an investigation.
- Misleading police during interviews or written enquiries.
- Attempting to protect a family member by hiding evidence.
- Encouraging someone to ignore court orders.
- Adjusting statements after realising they may have legal consequences.
- Interfering with digital communications that are relevant to a criminal matter.
- Disclosing information that compromises ongoing investigations.
- Attempting to assist someone who is the target of investigation without understanding the legal risks.
These situations often occur in stressful circumstances, where individuals may not be aware of the legal implications of their actions.
Defending Charges of Obstructing the Course of Justice

Defending allegations of obstruction requires careful examination of the evidence and context. Potential defence considerations may include:
Lack of Intent
The accused may not have intended to obstruct or pervert the course of justice. Behaviour driven by misunderstanding, confusion or fear may be relevant.
Honest and Reasonable Mistake
A genuine misunderstanding about legal obligations may be a factor in some cases.
Conduct Not Capable of Obstructing Justice
If the behaviour would not realistically influence the administration of justice, the charge may not be appropriate.
Insufficient Evidence
The prosecution must show that the conduct occurred and had the potential to obstruct the course of justice.
Each case depends on its circumstances, and legal advice is essential when facing a criminal charge of this nature.
What To Do If You Are Accused or Are a Target of Investigation
Becoming aware that you are a target of investigation or facing a criminal charge related to the administration of justice can be distressing. To navigate this challenging situation, it’s crucial to take early steps, such as seeking legal advice before participating in interviews or providing statements, preserving any relevant documents, recordings, or communications, complying with lawful instructions from investigators, and avoiding discussions that could complicate the matter, including informal conversations about the case.
Understanding your rights while interacting with police, as explained in our article on what not to say in a police statement, is critical. Receiving a court attendance notice signals the need to understand your obligations clearly.
Conclusion
Obstructing the course of justice is treated seriously across Australia because it threatens the fairness and reliability of legal processes. Conduct that disrupts investigations, alters evidence or influences witnesses can have far-reaching consequences. Whether the behaviour is deliberate or arises from misunderstanding, the implications can be significant.
If you are facing allegations or believe your actions have been misunderstood, professional legal support is essential. KPT Legal provides experience in criminal matters and can assist you in navigating the complexities of the justice system.
Start now by contacting KPT Legal for guidance on your situation.
Disclaimer: The above content is for general informational purposes only and should not be regarded as legal advice. The information provided may change over time. You should always seek professional advice before taking any action.










