Distinguishing between genuine subcontractors and employees - Getting it right in the plumbing trade

In the plumbing industry, flexibility is often essential. Businesses regularly engage subcontractors to scale labour up or down, access specialist skills or manage workload across multiple sites. However, misclassifying a worker as a subcontractor when in practice they are an employee, can expose plumbing businesses to significant legal, financial and reputational risk.

Recent court decisions and regulator focus have reinforced that whether an individual is labelled as a contractor or employee is not the only factor to determine a worker’s status. Getting it right requires a clear understanding of how the law distinguishes genuine subcontracting from employment.

This article explains the key principles plumbing businesses should consider when engaging workers, and practical steps to reduce misclassification risks.

Why classification matters

The distinction between employee and contractor affects core legal obligations. Employees are entitled to minimum wages, overtime, leave, superannuation, workers’ compensation coverage and protection under the Fair Work Act, applicable Awards and the National Employment Standards. Contractors generally invoice for services and are not covered by Awards or unfair dismissal laws.

If a plumber is incorrectly treated as a subcontractor, the business may face back-payments for wages, leave, super, penalties for sham contracting, interest and, in some cases, personal liability for directors. Regulators take the view that misclassification distorts competition by allowing non-compliant businesses to undercut compliant operators.

Labels are not decisive

Calling someone a “subcontractor”, paying them through an ABN or issuing invoices does not make them a contractor at law. Courts examine the true nature of the relationship. This assessment looks beyond paperwork to how the work is performed on site and within the business. Written contracts still matter, but only as part of a broader picture. If the day-to-day reality doesn’t match the contract, the practical reality will generally prevail.

The multi-factor test

Australian courts now apply a “multi-factor” approach, focusing primarily on the rights and obligations expressed in the contract, interpreted in context.

Common factors that remain highly relevant in the plumbing trade include:

• Control: Employees are usually subject to direction about how, when and where work is done. If a business sets start and finish times, allocates daily jobs, requires attendance at toolbox meetings and closely supervises the method of work, this points towards employment. Genuine subcontractors generally retain discretion over how they perform the work, even if the result is specified.
• Ability to subcontract or delegate: A key indicator of genuine contracting is the right to subcontract or delegate work to others. If the worker must personally perform the plumbing work and cannot send another qualified plumber in their place, this tends to indicate employment. In practice, many “subbies” are engaged precisely for their individual labour, which weakens the contractor argument.
• Tools, equipment and materials: Plumbers often supply their own hand tools regardless of status, so this factor alone is not decisive. However, where the business provides the vehicle, major tools, materials, uniforms and branded PPE, the relationship may look more like employment - particularly when combined with other factors.
• Risk and opportunity for profit: Contractors typically bear commercial risk and have an opportunity to make a profit through efficiency, pricing or managing costs. Employees are paid for time or output and are insulated from most business risk. If the plumber is paid an hourly rate regardless of efficiency, does not quote work and does not rectify defects at their own cost, this suggests employment.
• Integration into the business: Employees are usually part of the business rather than operating a business of their own. Indicators can include wearing company uniforms, being listed on internal rosters and working exclusively or predominantly for one plumbing business over a long period.
• Exclusivity and continuity: While not determinative, long-term, ongoing engagement with little work for others can indicate employment - especially if the worker depends on one business for most of their income and cannot freely accept work elsewhere.

Common risk scenarios in plumbing

Certain arrangements in the plumbing sector attract higher scrutiny. These include:

• Labour-only subcontractors engaged indefinitely, paid by the hour, using the business’s vehicle and materials.

• Fixed-day-rate “subbies” who work full-time under site supervision with no genuine business autonomy.
• ABN holders who transition from employment to contracting but whose duties, hours and supervision remain unchanged.

These scenarios frequently fail the legal tests for contracting, regardless of intentions.

Sham contracting risks

The Fair Work Act prohibits sham contracting, including knowingly misrepresenting employment as independent contracting or dismissing an employee to re-engage them as a contractor. Even well-intentioned arrangements can breach these provisions if the outcome is to avoid employment obligations. Importantly, intention is not always required; a business can be liable if it acted recklessly as to the worker’s true status.

Practical steps to get it right

Plumbing businesses can reduce risk by taking a structured approach:

• Assess before engaging: Consider whether the role truly needs a contractor or whether employment is more appropriate.
• Use tailored contracts: Contractor agreements should reflect genuine contracting rights, including delegation of work, pricing and control.
• Align practice with paperwork: Ensure site practices match the contract. Rights that are never exercised (such as delegation) carry little weight.
• Encourage true independence: Genuine contractors should have their own insurance, branding, client base and the freedom to work for others.
• Review long-term arrangements: Relationships can evolve. Periodic reviews help identify when a contractor arrangement has drifted into employment.
• Seek advice early: Classification errors are far cheaper to fix before a regulator, union or worker raises concerns.

When in doubt, employment may be safer

In many cases, particularly for core plumbing work performed under direct supervision, employment is the safer and more sustainable option. While employment carries higher upfront costs, it provides certainty, legal protection and stability in workforce planning. Misclassification, by contrast, creates hidden liabilities that can surface years later.

Why it matters

Correctly distinguishing between subcontractors and employees protects businesses from underpayment claims, penalties and disputes. It also supports a fair and competitive industry, where compliance determines success. Plumbing businesses that invest the time to structure lawful work arrangements are better placed to grow, retain skilled workers and withstand regulatory scrutiny. Getting classification right isn’t just a legal technicality. It’s a foundation for sustainable, reputable and resilient plumbing businesses.
 

Any further questions in relation to Award standards should be directed to the MPAQ Advisory line.