Caught Lying Under Oath? Why One False Statement Can Haunt Every Future Employment, Human Rights and Tribunal Proceeding

Whether your matter involves unfair dismissal, workplace discrimination, sexual harassment, bullying, victimisation, general protections, workers' compensation or a human rights complaint, your credibility may become your most valuable asset—or your greatest liability.

The Truth Doesn't End When the Hearing Does

Many people mistakenly believe that once a tribunal or commission hearing concludes, their evidence disappears with it.

It does not.

In reality, every answer given under oath or affirmation may be recorded, transcribed and preserved as part of the official record. That transcript can become one of the most powerful pieces of evidence in future proceedings involving the same person.

Whether you appear before:

• the Fair Work Commission;

• the Queensland Civil and Administrative Tribunal (QCAT);

• the Queensland Industrial Relations Commission (QIRC);

• the Australian Human Rights Commission (AHRC);

• the Queensland Human Rights Commission (QHRC);

• a workers' compensation tribunal;

• a disciplinary tribunal;

• a Royal Commission; or

• a court,

your evidence may have consequences that extend far beyond the proceeding in which it was given.

The hearing eventually ends.

The transcript often does not.

Caught Lying Under Oath? The Transcript May Follow You for Years

Credibility Wins and Loses Cases

Many employment and human rights disputes are decided not because one party has more witnesses, but because one witness is believed and another is not.

This is particularly true in cases involving:

• unfair dismissal;

• adverse action (general protections);

• workplace bullying;

• sexual harassment;

• racial discrimination;

• disability discrimination;

• age discrimination;

• religious discrimination;

• victimisation;

• workers' compensation;

• disciplinary proceedings;

• misconduct investigations;

• human rights complaints.

Frequently there are only two competing versions of events.

The tribunal's task becomes determining which version is truthful.

Once a witness is found to have deliberately lied, their entire evidence may be viewed with considerable caution.

The Law Requires Truthful Evidence

Before giving evidence, witnesses swear an oath or make an affirmation promising to tell the truth.

This is not merely ceremonial.

It is a legal obligation.

Deliberately giving false evidence may constitute:

• perjury;

• contempt of court;

• misleading a tribunal;

• attempting to pervert the course of justice;

• misconduct in certain professional contexts.

More commonly, however, the immediate consequence is that the witness simply loses credibility.

And credibility is often everything.

A Transcript Creates a Permanent Record

Every answer you give can become part of the official record.

Unlike memory:

• transcripts do not forget;

• transcripts do not change;

• transcripts cannot be explained away.

Years later they may reveal:

• contradictions;

• inconsistent explanations;

• admissions;

• exaggerations;

• deliberate dishonesty;

• changes in evidence.

Many witnesses forget exactly what they said.

Experienced advocates never rely on memory.

They rely on transcripts.

Employment, Human Rights and Discrimination Cases Depend on Credibility

In employment and human rights litigation, factual disputes often determine the outcome.

For example:

An employee alleges racial discrimination.

The employer denies it.

There are no independent witnesses.

The decision-maker must decide whose evidence is more reliable.

The same applies in:

• sexual harassment matters;

• disability discrimination complaints;

• victimisation claims;

• workplace bullying applications;

• adverse action claims;

• unfair dismissal applications;

• workers' compensation disputes.

One proven lie may cause the tribunal to question every other aspect of that witness's evidence.

That applies equally to employees, employers, managers, investigators and independent witnesses.

QCAT, the Fair Work Commission and Other Tribunals

Many tribunal proceedings are recorded.

Official transcripts may later be obtained in accordance with the tribunal's rules and procedures.

Importantly, a transcript does not automatically become evidence in every later proceeding.

However, where the applicable legislation and rules of evidence permit, previous sworn evidence may be relied upon for purposes including:

• demonstrating prior inconsistent statements;

• establishing admissions;

• challenging credibility;

• cross-examination;

• testing reliability;

• exposing contradictions.

In practical terms, once inconsistent sworn evidence exists, it can become extraordinarily difficult to escape.

Human Rights Cases Are No Different

Human rights jurisdictions are fundamentally concerned with fairness.

That includes fairness to complainants and respondents alike.

Tribunals determining allegations of:

• discrimination;

• harassment;

• vilification;

• victimisation;

• breaches of human rights legislation;

must assess the reliability of competing witnesses.

Decision-makers expect honesty from every participant.

If a witness deliberately fabricates evidence in a human rights complaint, the tribunal may reject not merely the false evidence but significant portions of that witness's overall case.

Documentary Evidence Usually Prevails

Australian appellate courts have repeatedly recognised that contemporaneous documents often provide the most reliable evidence.

• Emails.

• Text messages.

• Diary notes.

• Investigation reports.

• Medical records.

• Employment records.

• Social media posts.

And importantly—earlier sworn evidence.

When those documents conflict with a witness's oral testimony, tribunals will carefully examine why.

Experienced Advocates Prepare Using Earlier Evidence

Before any significant hearing, experienced advocates routinely compare:

• witness statements;

• affidavits;

• investigation interviews;

• emails;

• text messages;

• social media;

• medical records;

• personnel files;

• disciplinary records;

• previous tribunal transcripts;

• court transcripts.

A contradiction discovered during cross-examination is rarely accidental.

It is usually the product of careful preparation.

The Law on Credibility

Australian courts have developed well-established principles governing the assessment of witness credibility.

Fox v Percy (2003) 214 CLR 118

The High Court confirmed that credibility findings should not depend solely upon a witness's demeanour. Contemporary documents and objective facts are frequently more reliable than impressions formed from observing witnesses.

Watson v Foxman (1995) 49 NSWLR 315

This leading authority emphasises that findings should accord with objective probabilities arising from the evidence as a whole, rather than confidence or appearance alone.

Briginshaw v Briginshaw (1938) 60 CLR 336

Where allegations involve fraud, dishonesty or serious misconduct, the evidence must possess sufficient persuasive force before such findings are made.

Although the civil standard remains the balance of probabilities, serious allegations require careful and convincing evidence.

Relevant Legislation

Depending upon the jurisdiction, credibility issues may arise under legislation including:

Commonwealth

• Evidence Act 1995 (Cth)

• Fair Work Act 2009 (Cth)

• Australian Human Rights Commission Act 1986 (Cth)

Queensland

• Evidence Act 1977 (Qld)

• Human Rights Act 2019 (Qld)

• Anti-Discrimination Act 1991 (Qld)

• Queensland Civil and Administrative Tribunal Act 2009 (Qld)

• Industrial Relations Act 2016 (Qld)

• Criminal Code 1899 (Qld) (including offences relating to perjury)

Equivalent legislation exists throughout Australia.

Perjury Is Serious

Knowingly giving false evidence under oath may amount to perjury.

Perjury is a criminal offence throughout Australia and may carry significant penalties.

Although criminal prosecutions are relatively uncommon, tribunals and courts regularly make adverse findings about witnesses who deliberately lie.

Those findings alone may be devastating.

What Happens Once Credibility Is Lost?

A finding that a witness has deliberately lied may result in:

• rejection of large parts of their evidence;

• adverse credibility findings;

• unsuccessful claims or defences;

• unsuccessful appeals;

• adverse costs consequences (where available);

• disciplinary consequences;

• reputational damage;

• significant difficulties in future litigation.

Credibility is difficult to build.

It is remarkably easy to destroy.

The Practical Reality

An honest witness rarely needs to remember every answer previously given.

A dishonest witness usually does.

Eventually:

• documents emerge;

• emails surface;

• transcripts are produced;

• contradictions appear.

What may have seemed like a harmless lie during one hearing can become the defining feature of every later cross-examination.

Key Lessons

If you are involved in an employment, discrimination or human rights dispute:

• Tell the truth—even where the truth is uncomfortable.

• Never exaggerate your evidence.

• Never guess when you do not know.

• Correct mistakes immediately.

• Read your witness statement carefully before signing it.

• Assume every document and every answer may later be compared against every previous statement you have ever made.

Final Thoughts

Employment tribunals, discrimination jurisdictions and human rights commissions exist to determine disputes fairly. They can only do that when witnesses give honest and reliable evidence.

Honest mistakes happen. Human memory is imperfect. Decision-makers recognise that.

Deliberate dishonesty is something entirely different.

Once a witness is exposed as having intentionally lied under oath, the damage often extends well beyond the case in which the lie was told. A transcript creates an enduring record that may later be examined wherever the law permits it to be used. In future proceedings, it may become a powerful tool for testing credibility, exposing inconsistencies and challenging reliability.

Your credibility is earned one truthful answer at a time.

Protect it accordingly.

Disclaimer: This article provides general information only and should not be relied upon as legal advice. BAJN provides advocacy and representation services in employment, industrial relations and human rights matters. If you require legal advice, you should consult an Australian legal practitioner.