Wage Underpayment Class Actions in Australia: Criminal Penalties, Employer Risks and Employee Rights in 2026

Why Wage Underpayment Is Australia’s Highest-Profile Employment Risk in 2026

Wage underpayment class actions in Australia have moved from isolated corporate scandals into a systemic enforcement priority that now touches every sector of the economy. Since 2019, major Australian employers, from national retailers and banks to universities and hospital networks, have collectively disclosed billions of dollars in back-payment liabilities, with some individual remediation programmes exceeding A$500 million. The passage of the Fair Work Legislation Amendment (Closing Loopholes No. 2) Act 2024 transformed the regulatory landscape by making intentional wage underpayment a criminal offence from 1 January 2025, carrying maximum penalties of 10 years’ imprisonment and fines of up to A$7.825 million for a body corporate. As the Fair Work Ombudsman progresses its first investigations under the new regime and Payday Super adds a fresh compliance deadline from 1 July 2026, the intersection of criminal liability, surging class action filings and tightening regulatory scrutiny makes this the defining employment law risk of the year.

This guide provides a single, consolidated resource covering the three dimensions of that risk. It explains the wage theft laws operative in 2025 and 2026, maps the criminal and civil penalty frameworks side by side, analyses class action trends and the industries most exposed, sets out the practical compliance steps every employer should implement, and details the claim pathways available to employees who believe they have been underpaid. Whether you are a board director assessing governance exposure, a General Counsel commissioning a payroll audit, or a worker seeking to understand your rights under the Fair Work Act, the analysis that follows is designed to give you the authoritative, current guidance you need.

Australia’s approach to wage theft enforcement has shifted decisively from remediation to deterrence. Understanding how the new criminal offence interacts with the existing civil penalty regime, and where class action risk multiplies the financial exposure, is no longer optional for any organisation employing workers in this jurisdiction.

Legislative Background, The Closing Loopholes Act and the Criminalisation of Wage Theft

The Fair Work Legislation Amendment (Closing Loopholes No. 2) Act 2024 received Royal Assent in December 2023 and introduced the most significant amendments to the Fair Work Act 2009 (Cth) in over a decade. Among those amendments, the insertion of section 327A created a dedicated criminal offence for the intentional underpayment of employee wages and entitlements. The provision commenced on 1 January 2025 and applies to all national system employers, covering the vast majority of the Australian private-sector workforce.

The Closing Loopholes Act wage theft provisions target underpayments of any amount payable under the Fair Work Act, modern awards, enterprise agreements, workplace determinations and national minimum wage orders. This scope extends well beyond base pay: it captures overtime, penalty rates, shift allowances, leave entitlements, redundancy pay and superannuation guarantee contributions. Critically, the criminal offence sits alongside, rather than replacing, the existing civil penalty regime under the underpayment of wages provisions in the Fair Work Act. An employer that underpays workers unintentionally still faces civil penalties, while an employer that does so deliberately now faces potential prosecution as a Fair Work Act criminal offence.

The “Intentional” Threshold, What the Prosecution Must Prove

The criminal offence under s 327A is not a strict liability provision. The prosecution, conducted by the Commonwealth Director of Public Prosecutions (CDPP) following a referral by the Fair Work Ombudsman, must prove beyond reasonable doubt that the employer engaged in conduct resulting in an underpayment and that the underpayment was intentional. This is the element that separates the criminal pathway from its civil counterpart and that provides the critical boundary for employers to understand.

An honest mistake, a miscalculation arising from the genuine complexity of a modern award, or a good-faith but incorrect interpretation of an enterprise agreement will not satisfy the intentional underpayment criminal offence threshold. The prosecution must demonstrate a deliberate decision to withhold amounts the employer knew, or was wilfully blind to the fact, were owing. Evidence of intention may include internal communications directing payroll staff to apply incorrect rates, systematic alteration of time-and-attendance records, deliberate misclassification of employees to avoid award coverage, or a documented pattern of ignoring professional advice about compliance obligations. Negligence alone, however serious, is insufficient.

Voluntary Disclosure Cooperation Agreements, How Employers Can Self-Correct

Recognising that many large-scale underpayments are discovered by employers themselves during internal audits, the Closing Loopholes Act simultaneously introduced a voluntary disclosure cooperation agreement framework. From 1 January 2025, an employer that identifies a potential underpayment can approach the Fair Work Ombudsman, disclose the issue and enter into a formal cooperation agreement. While the agreement remains in effect and the employer meets its terms, which typically require full remediation of affected employees, ongoing cooperation with the FWO’s investigation and implementation of systemic corrective measures, the FWO will not refer the matter for criminal prosecution.

This mechanism creates a powerful incentive for proactive self-auditing. Employers that discover underpayments, disclose them transparently and remediate promptly gain, in effect, a safe harbour from criminal prosecution. The voluntary disclosure cooperation agreement does not, however, shield an employer from civil penalties, nor does it prevent employees from pursuing their own recovery claims or joining a class action. It is a criminal prosecution shield, not total immunity from consequence.

Criminal Penalties for Wage Underpayment Under the Fair Work Act

The maximum penalty for criminal wage theft in Australia is 10 years’ imprisonment for an individual and a fine of up to A$7.825 million for a body corporate. These are among the most severe wage theft criminal penalties in Australia’s legislative history and rank alongside the harshest comparable regimes internationally. An individual offender faces a fine of up to 5,000 penalty units (approximately A$1.565 million based on the Commonwealth penalty unit value effective 1 July 2025) or three times the underpayment amount, whichever is greater. For a body corporate, the maximum fine is 25,000 penalty units (approximately A$7.825 million) or three times the underpayment amount. The 3× multiplier is designed to ensure that the penalty always exceeds any financial benefit the employer derived from the conduct.

The criminal penalties must be understood in context alongside the pre-existing civil penalty regime, which continues to apply to all underpayments, including unintentional ones. The following table sets out the key distinctions between the two frameworks.

The difference between these two regimes is not merely one of quantum. A criminal conviction carries imprisonment, a permanent criminal record and reputational damage that no fine can capture. Yet employers should not assume that falling below the criminal threshold equates to safety: civil serious contravention penalties can reach A$4.695 million per contravention for a body corporate and can be stacked across multiple contraventions involving hundreds or thousands of affected employees. In a systemic underpayment scenario, cumulative civil exposure can rival or exceed the criminal fine caps.

Director and Officer Personal Liability

Section 550 of the Fair Work Act imposes accessorial liability on any person who is “involved in” a contravention. This includes directors, company secretaries, senior managers and HR executives who knowingly authorised, permitted or were complicit in underpayment conduct. In the criminal context, a director who was involved in an intentional underpayment faces individual prosecution, up to 10 years’ imprisonment and personal fines. Director liability for wage underpayment is not theoretical: the Fair Work Ombudsman has already pursued accessorial liability claims against individual officers in civil penalty proceedings. The addition of criminal sanctions elevates this exposure to a level that demands board-level attention and proactive governance oversight, a point emphasised by the Australian Institute of Company Directors, which has urged all boards to treat payroll compliance as a standing agenda item.

Interaction with State Wage Theft Offences (QLD, VIC)

Prior to the commencement of the federal criminal provisions, Queensland and Victoria enacted their own state-based wage theft offences. Queensland’s Criminal Code (Wage Theft) provisions carry a maximum penalty of 10 years’ imprisonment. Victoria’s Wage Theft Act 2020 created similar offences with penalties including imprisonment and significant fines. The federal framework was designed to provide national consistency. The Closing Loopholes Act includes provisions to ensure the Commonwealth offence takes precedence for national system employers, preventing double jeopardy. State offences may, however, continue to apply to employers outside the national system, such as sole traders and unincorporated partnerships in certain jurisdictions. Employers operating across multiple states should seek legal advice to confirm which regime governs their specific circumstances, particularly those with a mix of corporate and non-corporate entities. For further background on who investigates white-collar crime in Australia, including the division of responsibilities between federal and state agencies, see our related guide.

Wage Underpayment Class Actions in Australia, Trends, Key Cases and Risk Factors

Wage underpayment class actions in Australia have increased steadily since 2018 and are now recognised by leading risk advisors as one of the highest-probability, highest-impact litigation categories facing corporate Australia. Clayton Utz’s 2026 Corporate Risk Landscape identifies wage underpayment representative proceedings as a top-tier corporate risk, noting that the volume of filings continues to accelerate and that settlement values are rising in parallel. The convergence of complex modern award structures, legacy payroll system errors, heightened regulatory scrutiny and well-capitalised litigation funders has created conditions in which underpayment that persists undetected for years can rapidly crystalise into claims worth hundreds of millions of dollars.

Industries at Highest Risk

Certain sectors are disproportionately exposed to wage theft class action settlements and new filings, driven by the complexity of their applicable industrial instruments and the scale of their workforces:

• Retail and fast food: Complex award structures with variable penalty rates, casual loading calculations, split-shift arrangements and junior pay scales create persistent calculation risk. Major retailers including Woolworths and Super Retail Group have disclosed significant back-payment liabilities exceeding hundreds of millions of dollars.
• Hospitality: High reliance on casual, part-time and visa-holder workforces, combined with the intricate penalty rate framework of the Hospitality Industry (General) Award, makes this sector one of the most class-action-prone. Underpayment often extends to overtime, break penalties and weekend and public holiday rates.
• Higher education: Universities have faced multiple class actions arising from the misclassification of academic staff and the systemic underpayment of casual academics for preparation, marking and administrative time not adequately reflected in contracted hours.
• Financial services and banking: The Commonwealth Bank’s large-scale self-disclosure of wage underpayment, affecting tens of thousands of current and former employees, demonstrated that even the most resourced organisations with sophisticated payroll technology are not immune to systemic errors.
• Healthcare: Shift-based work, complex overtime entitlements under the Health Professionals and Support Services Award, and the interaction of enterprise agreements with the National Employment Standards have produced a growing pipeline of claims in both the public and private hospital sectors.

Australia’s ongoing skill shortages compound these risks. Labour market tightness increases employer reliance on casual, part-time and temporary visa-holder workers, the very categories most susceptible to award misapplication and underpayment.

Anatomy of a Wage Underpayment Class Action

A typical wage underpayment class action commences when one or more employees (or their legal representatives) identify a systemic payroll error affecting a definable class of workers. The lead applicant files a representative proceeding in the Federal Court of Australia under Part IVA of the Federal Court of Australia Act 1976, defining the class by reference to shared characteristics, for example, “all employees covered by the [named] enterprise agreement employed between [date range] who were paid less than their correct entitlements under the applicable modern award.” Australia operates an opt-out class action system: all persons falling within the defined class are automatically included unless they take affirmative steps to exclude themselves.

The proceeding advances through discovery, during which the employer’s payroll records, time-and-attendance data and internal communications are examined, followed by determination of common questions. If the matter does not settle, a trial on the common issues proceeds. In practice, the overwhelming majority of wage underpayment class actions in Australia settle before trial, with settlement amounts typically comprising back-payments, interest, superannuation top-ups, and contributions toward the applicants’ legal costs. The reputational damage to the employer frequently exceeds the settlement quantum itself.

The Role of Litigation Funders

Third-party litigation funders have been instrumental in the growth of wage underpayment class actions. By providing the capital necessary to run complex, multi-year proceedings in exchange for a percentage of any recovery, funders have removed the primary barrier that historically prevented employees from pursuing systemic claims: cost. Their involvement means that even underpayments affecting lower-paid workers, which individually might not justify litigation, can be aggregated into commercially viable class proceedings involving thousands of claimants. For employers, this has fundamentally changed the risk calculus for payroll compliance in Australia. An underpayment that might once have attracted only a handful of individual complaints can now be converted, almost overnight, into funded representative proceedings with total exposure in the hundreds of millions.

Employer Risks and Compliance Obligations in 2026

The employer underpayment penalties in Australia now span criminal prosecution, civil fines, class action liability, regulatory investigation and lasting reputational harm. For any organisation employing workers in the Australian market in 2026, payroll compliance has ceased to be a purely administrative function. It is a governance-level obligation with direct consequences for the personal liberty and financial exposure of directors and officers. The sections below set out the key compliance obligations and practical measures every employer should implement.

Payroll Compliance, Modern Awards and Enterprise Agreements

The single most common source of systemic underpayment in Australia is the misapplication of modern awards and enterprise agreements. The Fair Work Commission maintains over 120 modern awards, each containing detailed and frequently updated provisions governing base rates, penalty rates, overtime thresholds, allowances, leave loading and classification structures. When an enterprise agreement interacts with, or purports to modify, an underlying award, the risk of calculation error multiplies. The enterprise agreement breach penalty regime adds a further layer: any term in an enterprise agreement that undercuts the applicable modern award’s Better Off Overall Test (BOOT) can itself generate contravention exposure. Employers must ensure that their payroll systems correctly map every employee to the right industrial instrument, apply the correct rates for every hour worked, and reconcile enterprise agreement terms against the relevant modern award on an ongoing basis.

Record-Keeping and Documentation Obligations

The Fair Work Act imposes strict record-keeping obligations on all employers. Employee records, including hours of work, rates of pay, overtime, leave balances and superannuation contributions, must be maintained for a minimum of seven years and be available for inspection. Failure to keep accurate records is itself a contravention of the Act, and in underpayment proceedings a reverse onus may apply: where an employer cannot produce records to disprove an alleged underpayment, the court may accept the employee’s account. In the criminal context, the deliberate destruction, alteration or falsification of payroll records could constitute powerful evidence of intentional underpayment, dramatically increasing the risk of prosecution under s 327A.

Payday Super (July 2026), The Next Compliance Wave

From 1 July 2026, Payday Super requires employers to remit superannuation guarantee contributions on the same day as ordinary wages, replacing the longstanding quarterly payment cycle. This reform introduces a significant new compliance layer. Employers must reconfigure payroll systems to calculate and transmit superannuation in real time with each pay run. Any failure to remit superannuation on payday will constitute an underpayment of superannuation entitlements, potentially triggering civil penalties and, where the failure is intentional, criminal liability under the new wage theft provisions. Employers should treat Payday Super 2026 compliance as an integral component of the broader payroll compliance programme, not a standalone IT project. The deadline is imminent, and systems that are not updated before 1 July 2026 will generate contraventions from day one.

Key Legislative Dates, Timeline

Employer Compliance Checklist

• Commission an independent payroll audit: Engage a specialist to review all modern award and enterprise agreement classifications, rate calculations, penalty rate applications and leave entitlements across the entire workforce, not just a sample.
• Map every employee to the correct industrial instrument: Confirm award coverage and enterprise agreement coverage for each role. Identify any employees who may be misclassified or who have moved between classifications without a corresponding payroll update.
• Test payroll system configurations against current rates: Ensure software correctly applies the latest annual wage review adjustments, overtime thresholds, casual loading, penalty rates, allowances and superannuation rates, including the Payday Super changes from 1 July 2026.
• Review record-keeping practices: Confirm that time-and-attendance records, pay slips, leave records and superannuation contribution data meet the seven-year retention requirement and are audit-ready on short notice.
• Establish an underpayment response protocol: Create a documented internal process covering identification, escalation, voluntary disclosure to the FWO, employee communication, remediation and board reporting.
• Brief the board on personal liability: Ensure directors and officers understand their exposure under s 550 accessorial liability and receive regular payroll compliance reporting as a standing board agenda item.
• Engage specialist employment law advice: Consult a qualified employment lawyer to review your compliance framework, advise on voluntary disclosure options where underpayments are identified, and prepare a class action response strategy.

Employee Rights and Claim Pathways for Wage Underpayment

Employees in Australia have robust legal protections against wage underpayment, and the pathways for recovering unpaid wages are more accessible than many workers realise. The employee rights for unpaid wages in Australia apply equally to full-time, part-time and casual workers, to Australian citizens and visa holders, and to current employees and those who have left their employer. Understanding where to go and what evidence to gather is the critical first step.

Filing a Complaint with the Fair Work Ombudsman

The Fair Work Ombudsman is the primary government agency responsible for investigating Fair Work Ombudsman wage theft complaints and enforcing compliance with the Fair Work Act. Any employee or former employee can lodge a complaint through the FWO’s online portal at no cost. The FWO assesses each complaint and, where evidence of underpayment exists, may conduct a formal investigation, issue a compliance notice requiring the employer to rectify the shortfall, commence civil penalty proceedings, or, under the new criminal provisions, refer the matter to the CDPP for prosecution. Employees do not need legal representation to lodge a complaint, although specialist legal advice is recommended for complex matters. Unions and employee representative organisations can also lodge complaints on behalf of their members. International workers relocating to Australia should be particularly attentive to their award entitlements, as unfamiliarity with the Australian industrial relations system can increase vulnerability to underpayment.

Small Claims vs. Federal Court Proceedings

For underpayment claims of up to A$100,000, employees can use the small claims process in the Federal Circuit and Family Court of Australia. This pathway is designed to be faster, less formal and more affordable than standard litigation. Strict rules of evidence are relaxed, self-representation is common and the court aims to resolve matters efficiently. For claims exceeding A$100,000, or where the underpayment is systemic and affects a group of employees, proceedings in the Federal Court of Australia under its general federal jurisdiction are the appropriate pathway.

Joining or Initiating a Class Action

Where an underpayment affects a class of employees who share common circumstances, for instance, all workers employed under a particular award classification during a defined period, a representative proceeding may be brought under Part IVA of the Federal Court of Australia Act 1976. Australia’s opt-out system means that all persons falling within the defined class are automatically included unless they take steps to exclude themselves. Employees who suspect they are part of a broader pattern of underpayment should seek legal advice about whether an existing class action covers their claim or whether new proceedings could be initiated. Litigation funders routinely provide the capital for these proceedings, meaning employees typically bear no upfront legal costs.

Limitation Periods and Back-Pay Recovery

A question frequently asked is how far back you can claim underpayment in Australia. Under s 544 of the Fair Work Act, an application relating to underpayment must be made within six years of the date on which the underpayment occurred. Employees can therefore recover up to six years of unpaid wages, penalty rates, overtime, leave entitlements and superannuation contributions, a substantial window that can result in significant lump-sum back-payments. Interest may also be awarded on outstanding amounts. To strengthen their position, employees should gather and preserve all available evidence: pay slips, rosters, time sheets, employment contracts, enterprise agreements and any written correspondence with their employer about pay. The right to claim applies equally to current and former employees, resignation, redundancy or termination does not extinguish the right to recover historical underpayments.

How a Specialist Employment Lawyer Can Help

The intersection of criminal liability, civil penalties, class action exposure and evolving superannuation obligations makes wage underpayment one of the most legally complex areas of Australian employment law in 2026. Both employers and employees benefit from early engagement with a specialist practitioner who understands the full scope of the current regulatory environment.

For employers, a specialist employment lawyer can conduct or oversee a comprehensive payroll compliance audit, identify underpayment risks before they escalate to enforcement action, advise on the voluntary disclosure cooperation agreement process and negotiate with the Fair Work Ombudsman, review enterprise agreement terms against applicable modern awards, prepare the organisation for Payday Super compliance, brief directors on their personal liability exposure and develop a class action response strategy. Where an underpayment has already been identified, early legal advice on self-disclosure is critical to securing the benefit of the criminal prosecution safe harbour.

For employees, a qualified employment lawyer can assess whether an underpayment has occurred, calculate the full quantum of the claim including interest and superannuation shortfalls, advise on the most appropriate recovery pathway, FWO complaint, small claims, Federal Court proceedings or class action participation, and represent the employee throughout the process. In class action matters, plaintiff-side employment lawyers work with litigation funders to ensure affected workers can participate without bearing upfront costs.

Whether you are seeking to protect your business from enforcement action or recover wages you are owed, connecting with a qualified Australian employment lawyer through the Global Law Experts Australia directory is the essential first step. Global Law Experts connects clients with pre-vetted specialists across every Australian state and territory.