Tradie Subcontractor vs Employee: How the ATO Decides and What Gets It Wrong

One of the most costly mistakes a tradie business can make is treating someone as a subcontractor when the ATO considers them an employee. The consequences include back-paying super with penalties, remitting unpaid PAYG withholding, and potentially paying the Superannuation Guarantee Charge — which is more expensive than the super itself.

This isn't a grey area the ATO takes lightly. It conducts targeted audits of the construction and trade industries specifically because misclassification is widespread. And "we've always done it this way" or "they asked to be a contractor" is not a defence.

This guide explains how the ATO actually determines whether someone is an employee or a contractor, what the financial consequences of getting it wrong are, and how to protect yourself.

Why This Matters So Much

When someone is your employee, you have obligations that don't exist for contractors:

  • Superannuation: You must pay 11.5% super on their ordinary time earnings
  • PAYG withholding: You must withhold tax from their wages and remit it to the ATO
  • WorkCover: You must have workers compensation insurance covering them
  • Fair Work entitlements: Annual leave, personal leave, minimum wage, unfair dismissal protections
  • Payroll tax: If your wages bill exceeds the state threshold
  • Single Touch Payroll reporting: Every pay run reported to the ATO

When someone is genuinely a subcontractor, none of these apply (though some specific rules still apply — see below).

The temptation to classify workers as contractors is real — it saves money and reduces admin. But if the ATO reclassifies those workers as employees after an audit, you pay:

  • All unpaid superannuation for the full period they were misclassified
  • PAYG withholding that should have been withheld (though this may be recoverable from the worker in some circumstances)
  • The Superannuation Guarantee Charge — calculated differently from ordinary super and always more expensive
  • Penalties and general interest charge on top

This can add up to tens of thousands of dollars and in serious cases can threaten the viability of the business.

How the ATO and Fair Work Determine Worker Status

The classification is based on the substance of the working arrangement, not what it's called. Labelling someone a "subcontractor" in a contract doesn't make them one if the reality of the relationship is that they're an employee.

The ATO and courts look at a series of factors. No single factor determines the result — it's the overall picture that matters.

Factors pointing to EMPLOYEE status:

Works under direction and control: You tell them specifically how to do the work, when to start and finish, and where to work. You control the method, not just the outcome.

Works exclusively or mainly for your business: They don't work for other businesses, or rarely do. They're economically dependent on you.

Uses your tools and equipment: They work with tools and vehicles you provide rather than their own.

Cannot subcontract or delegate: They personally perform the work — they can't send someone else in their place.

No financial risk: They're paid a fixed rate regardless of whether the job goes well or over-budget. They don't bear the risk of a loss.

Integrated into your business: They attend your team meetings, wear your uniforms, represent your business to clients.

No separate business presence: They don't have their own ABN (or got one specifically at your request), don't have their own insurance, don't market their services to others.

Factors pointing to CONTRACTOR status:

Works to a specific result: They're engaged to complete a defined piece of work, not to provide ongoing labour.

Has their own business: They have their own ABN, insurance, tools, and work for multiple clients.

Sets their own hours and methods: They decide how to achieve the outcome without your direction.

Can subcontract: They can send another suitably qualified person to do the work.

Bears financial risk: They provide a fixed-price quote — if it takes longer than expected, they absorb the cost. They can profit or lose on a job.

Has their own insurance: They carry their own public liability and potentially professional indemnity insurance.

The "Contractor Test" in Practice

The ATO has an online decision tool at ato.gov.au/calculators-and-tools that walks through the relevant questions for a specific working arrangement and gives an indicative result. This isn't legally binding, but using it and keeping a record of your result is evidence of good faith.

For trade businesses, the most common scenarios:

Scenario 1: Subbies You Use Regularly

You use the same plasterer on almost every project. He has an ABN. He invoices you. But he works exclusively for your business, uses your equipment, and you direct his work daily.

ATO assessment: Likely an employee. The exclusive working relationship, direction and control, and lack of genuine business risk point clearly to employment.

Scenario 2: Specialist Trade Contractors

You're a builder and engage a licensed electrician to do the rough-in on a project. The electrician runs their own business, has multiple clients, provides their own tools, quotes a fixed price for the job, and carries their own liability insurance.

ATO assessment: Contractor. They have a genuine business, bear financial risk, and aren't integrated into yours.

Scenario 3: Labour Hire

You engage a worker through a labour hire company. The labour hire company pays the worker — not you.

ATO assessment: The labour hire company is the employer. Your obligation is to ensure the labour hire company has proper arrangements in place. Some labour hire contracts include indemnities around this.

Scenario 4: The "ABN Contractor" Who's Really a Worker

A labourer works on your sites every day, under your supervision, using your tools and equipment. At your suggestion, they got an ABN to be paid as a contractor.

ATO assessment: Employee. Getting an ABN doesn't change the nature of the relationship. The substance of the arrangement is employment regardless of what it's called.

Special Rules: When Contractors Still Get Super

Even when a worker is a genuine contractor — not an employee — there are situations where you must still pay them superannuation.

Under the superannuation guarantee legislation, super is payable to a contractor if:

  • Their contract is wholly or principally for their labour — they're paid primarily for their personal exertion rather than for materials, equipment, or a business outcome; AND
  • They perform the work personally — they don't subcontract it to someone else

This catches many "contractors" in the trade industry who receive regular labour payments and don't have genuine business infrastructure. If a subie invoices you every week primarily for their personal labour, you may owe them super regardless of the contractor label.

This is a separate analysis from the employee/contractor distinction. Even a worker who is correctly classified as a contractor may still trigger a super obligation.

The Concrete Cost of Getting It Wrong

An ATO audit that reclassifies workers as employees can be devastating. Here's a simplified example:

A plumbing business uses two subbies as full-time labourers for three years. Each earns $80,000/year. They're treated as contractors — no super, no PAYG.

Back-calculated super obligation:

  • $80,000 × 10.5% (average rate over the 3 years) × 2 workers × 3 years = $50,400

Superannuation Guarantee Charge (SGC is calculated differently and always costs more than ordinary super):

  • SGC assessment: unpaid super + interest (10% per annum) + administration charge ($20 per employee per quarter) + possible penalty
  • Total SGC liability could reach $65,000–$80,000

PAYG withholding: If the ATO also determines that PAYG should have been withheld, further penalties apply — though there's a director liability provision that can result in personal liability for unpaid withholding.

Total exposure: $65,000–$100,000+ — for two workers over three years.

How to Protect Yourself

Apply the tests honestly before you engage someone. Use the ATO's online tool. Keep a record of your assessment.

Document the genuine contractor relationship. Keep their ABN, their insurance certificates of currency, their quotes and invoices, evidence that they work for other clients.

Never tell someone to get an ABN to avoid employment obligations. This is not a valid strategy and is increasingly targeted by the ATO.

Get subcontractors to invoice you. Genuine contractors invoice for their services. If you're calculating wages and handing over cash, that looks like employment.

Review your arrangements when things change. A relationship that starts as genuine contracting can shift toward employment over time if the worker becomes economically dependent on your business. Reassess periodically.

Seek advice if you're unsure. An employment lawyer or your accountant can review a specific working arrangement and give you an informed view. The cost of that advice is far less than the cost of an ATO audit.

The Sham Contracting Law

Fair Work Australia has specific provisions against "sham contracting" — knowingly misrepresenting an employment relationship as a contracting arrangement. If Fair Work determines you've done this deliberately, penalties of up to $18,780 per breach (for individuals) and $93,900 per breach (for companies) apply, plus orders to remedy the underpayment of entitlements.

This is not a theoretical risk. Fair Work pursues sham contracting complaints, particularly in the construction industry.

The Bottom Line

The tradie industry has a long history of labour being engaged on ABNs to reduce costs and simplify admin. The ATO and Fair Work are well aware of this and actively enforce the rules. The distinction between employee and contractor is made on the substance of the arrangement — not the label, not the payment method, not whether the worker has an ABN.

Apply the tests correctly, document your reasoning, and if in doubt, get advice. The cost of getting it right from the start is a fraction of the cost of getting it wrong.

Tradie Money AU provides practical guidance for Australian tradie businesses. This article is general information only and does not constitute legal or tax advice. Employment law is complex — seek advice from a registered tax agent or employment lawyer for guidance specific to your working arrangements.