Misclassifying an employee as an independent contractor is one of the most common and costly payroll compliance errors in Australian business. The ATO, the Fair Work Ombudsman, and state revenue offices all run programs to identify businesses that have engaged workers as contractors when the true relationship is employment.
The consequences of misclassification include back-payment of superannuation guarantee charges (with the non-deductible SGC charge, not just the super itself), PAYG withholding obligations, payroll tax (state-level), and potential worker entitlements under the Fair Work Act.
The multi-factor test
There is no single test for employee vs. contractor in Australian law. Courts and regulators apply a multi-factor test that looks at the totality of the relationship. The relevant factors include:
Control over how work is performed An employee is typically directed by the employer on how, when, and where to perform work. A contractor determines their own method and schedule.
Ability to subcontract A contractor can typically subcontract or delegate the work to someone else. An employee performs the work personally.
Provision of tools and equipment Contractors typically supply their own tools and equipment. Employees typically use the employer tools.
Risk Contractors bear commercial risk (they can make a profit or loss on the engagement). Employees are paid regardless of the outcome.
Integration Is the worker integrated into the business operations, or operating as a separate business entity? A worker who has their own ABN, invoices multiple clients, and markets their services independently is more likely to be a contractor.
Hours and exclusivity A worker engaged exclusively for regular set hours is more likely an employee, even if they hold an ABN.
| Factor | Employee | Contractor |
|---|---|---|
| Control over work | Directed how, when, where | Determines own method and schedule |
| Ability to subcontract | Performs work personally | Can subcontract or delegate |
| Tools and equipment | Uses employer tools | Supplies own tools |
| Risk | Paid regardless of outcome | Bears commercial profit or loss |
| Integration | Integrated into the business | Operates as separate business entity |
| Hours and exclusivity | Exclusive, regular set hours | Invoices multiple clients |
The 2022 High Court decisions
The High Court decisions in CFMMEU v Personnel Contracting and ZG Operations v Jamsek clarified that written contracts are the starting point for characterising the relationship, not just the conduct after the contract is signed. If the contract clearly establishes an independent contractor relationship and the parties act consistently with it, the written terms carry significant weight.
However, the Court also confirmed that the overall character of the relationship is still examined, and sham contracting arrangements where the written terms do not reflect reality will not be accepted.
The superannuation guarantee extended definition
Even if a worker is genuinely a contractor, superannuation guarantee may still apply under the extended definition in the Superannuation Guarantee (Administration) Act. SGC applies to contractors who:
- Work mainly for one principal (more than 50% of the contract relates to labour rather than supply of materials)
- Are paid wholly or mainly for their personal labour
This means a sole trader contractor who performs mostly personal labour work for one client may generate an SGC obligation for that client, even without an employment relationship.
Practical checklist for bookkeepers
When onboarding a new worker for a client:
- Obtain the worker classification worksheet completed by the business owner
- Review the written contract terms
- Check against the multi-factor test
- If the result is borderline, recommend the ATO Employee/Contractor decision tool and document the output
- If classified as contractor, confirm ABN, check GST registration status (withhold 47% if no ABN provided)
- If classified as employee, set up payroll with correct award, super, and tax file number
For existing contractors, an annual review of the arrangements is good practice, particularly if the nature of the work has changed or the engagement has become exclusive and full-time.
The ATO decision tool
The ATO maintains an online employee/contractor decision tool that generates a determination based on answers to a series of questions. The determination is not legally binding, but using the tool and documenting the outcome provides useful evidence of due diligence if the arrangement is ever challenged.
The tool is available at the ATO website under employee/contractor. For borderline cases, the determination should be saved and kept with the engagement documentation.
Payroll tax considerations
State payroll tax can apply to contractor payments in some circumstances. Each state has its own contractor provisions, but generally if a person is engaged as a contractor but would be considered an employee under the payroll tax contractor provisions, their payments are included in the payroll tax base.
This is a separate analysis from the ATO employee/contractor test, and some workers can be contractors for ATO purposes but deemed employees for payroll tax purposes. For businesses that are close to the payroll tax threshold (which varies by state from $700,000 to $2M), the inclusion of contractor payments can push them over the threshold unexpectedly.