Worker classification is one of the most expensive mistakes a small Australian business can make. Get it wrong — even unintentionally — and you can face years of back-paid superannuation, unpaid leave entitlements, PAYG withholding shortfalls, and fines from both the ATO and the Fair Work Ombudsman. The 2022 High Court cases changed how the courts assess the question, and 2026 brings new enforcement energy around the issue.
Quick Answer
Classification depends on the totality of the relationship — not just the contract wording, not whether someone has an ABN, and not what you call them. Key factors are: who controls how the work is done, who bears the risk, and whether the worker is integrated into your business or operating as a separate enterprise.
In 2022, the High Court of Australia handed down two landmark decisions — CFMMEU v Personnel Contracting and ZG Operations v Jamsek — that fundamentally changed how worker classification is assessed.
Before these cases, courts looked at the practical reality of how work was performed — whether the business actually controlled the worker day-to-day, regardless of what the contract said. The High Court shifted this: where parties have a comprehensive written contract, the rights and obligations in that contract are the primary focus of the analysis, not the conduct that followed.
What this means in practice: your written contract now matters more than it used to. But it does not mean you can simply write “contractor” in a contract and be protected — the totality of the contractual relationship is assessed, and if the contract gives you the right to direct the worker extensively, they will likely still be an employee regardless of the label.
No single factor determines classification. Courts and the ATO look at the whole picture. Here are the factors with the most weight:
Employee indicator
Employer directs how, when, and where work is done
Contractor indicator
Worker decides how to complete the task — only the outcome is specified
Employee indicator
Must perform the work personally — cannot send a substitute
Contractor indicator
Can subcontract the work to others or delegate to staff
Employee indicator
Employer provides tools, equipment, and workspace
Contractor indicator
Worker provides their own tools and bears their own costs
Employee indicator
Part of the organisational structure — has a job title, reports to manager
Contractor indicator
Operates as an independent business — not on the org chart
Employee indicator
Employer bears the risk of bad results, must still be paid
Contractor indicator
Worker bears risk of defective work, may not be paid if outcome is not met
Employee indicator
Paid for time worked (hourly, weekly salary)
Contractor indicator
Paid for a result — by quote, milestone, or project deliverable
Employee indicator
Usually works exclusively for one employer
Contractor indicator
Advertises services to the public and works for multiple clients
Employee indicator
May wear the employer's uniform or represent the employer's brand
Contractor indicator
Operates under their own business name and branding
This is the single most common misunderstanding among small business owners. Many employers believe that if a worker registers for an ABN, that creates a contractor relationship and removes employment obligations.
It does not. The ATO and Fair Work Ombudsman assess the actual relationship using the factors above — the existence of an ABN is one minor indicator among many. If a worker with an ABN comes to your premises every day, uses your equipment, is directed by your managers, and cannot send someone else in their place, they are almost certainly an employee under both Fair Work and tax law — regardless of their ABN status.
There have been numerous successful Fair Work prosecutions where businesses argued that ABN status settled the question. It does not. The ATO's Employee/Contractor tool on their website runs through the actual factors and is worth completing before engaging any worker on a contracting basis.
Even a genuine independent contractor may be entitled to superannuation from the engaging business in certain circumstances. The Super Guarantee applies to contractors who are paid wholly or principally for their personal labour and skills — not for a commercial result — and who work under the direction of the engaging business.
This catches many tradespeople, cleaners, and gig workers who technically run their own ABN businesses but whose work arrangements look like employment. The ATO has pursued super recovery from businesses in these situations, and from 1 July 2026 under Payday Super, any super owed to contractors in this category must also be paid on every payday.
Sham contracting occurs when a business deliberately misrepresents or disguises an employment relationship as an independent contracting arrangement. Under Section 357 of the Fair Work Act, it is unlawful to:
Importantly, intent is not required to commit sham contracting. If you misclassify a worker recklessly — without genuinely considering whether the arrangement is lawful — that can still constitute a contravention. The penalties as of 2026 are up to $16,500 per contravention for individuals and $82,500 per contravention for companies. Each worker who is misclassified is a separate contravention.
Even if a worker is a genuine independent contractor, they may be subject to the Personal Services Income (PSI) rules if 80% or more of their business income comes from a single client. PSI rules restrict what business deductions the contractor can claim and how income is taxed — they cannot, for example, split income with a spouse or divert it through a trust to reduce tax.
A contractor can escape the PSI rules if they pass one of the ATO's tests: the results test (paid for a specific outcome, not just time), the unrelated clients test (income comes from at least two unrelated clients), the employment test (employs others to help deliver at least 20% of work), or the business premises test (operates from premises not provided by the client).
This matters for how contractors lodge their tax returns and what they can deduct — and for businesses that engage contractors, it is worth understanding whether your contractors are aware of their PSI obligations, as ATO audits sometimes flow from contractor tax issues to the engaging business.
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Start free trialNo. Having an ABN does not automatically make a worker an independent contractor. The High Court looks at the totality of the relationship, including control, integration, and risk. A worker can have an ABN and still be legally classified as an employee for tax, super, and Fair Work purposes.
Sham contracting is when an employer deliberately misrepresents an employment relationship as a contracting arrangement to avoid providing employee entitlements. It is illegal under the Fair Work Act. Penalties can reach $82,500 per contravention for companies.
It depends. True independent contractors generally do not receive super from the engaging business. However, if a contractor is paid wholly or principally for their personal labour (not a commercial result), and works under the direction of the engaging business, they may be entitled to the Super Guarantee regardless of their ABN status.
The 80% rule (Personal Services Income test) applies when a contractor earns 80% or more of their business income from a single client. In this case, the income is classified as Personal Services Income and different tax rules apply — expenses cannot be deducted as freely as a genuine business would be able to.
You may be liable for years of unpaid super (with interest), unpaid annual leave and personal leave entitlements, PAYG withholding shortfalls, and penalties from both the ATO and Fair Work Ombudsman. The ATO has an active program specifically targeting worker classification errors.