What is a contract of service in Australia

A contract of service is simply the legal name for an employment contract: the agreement under which a worker is engaged as an employee rather than as an independent contractor. The distinction between a contract of service and a contract for services is one of the oldest and most consequential questions in Australian workplace law, because everything from minimum wages to superannuation turns on which side of the line a worker falls.

This guide explains what a contract of service actually is, how the law decides who is an employee, the entitlements that attach once a contract of service exists, and the misconceptions that most often land small businesses in trouble. It ends with a worked example and the question worth asking about every new hire.

A contract of service is an agreement, not a document

A contract of service is formed the same way any contract is formed: one party makes an offer, the other accepts it, and something of value passes each way. The employee promises to perform work, and the employer promises to pay for it. The name distinguishes a contract of service, where the worker serves in the employer's business, from a contract for services, where an independent contractor agrees to deliver a result.

Nothing in Australian law requires an employment contract to be in writing. A contract of service can be written, verbal, or implied by the way the parties behave, and a verbal offer accepted on the first day of work is just as binding as a signed letter of offer. What writing adds is certainty: a clear written agreement records the duties, hours, pay and entitlements the parties actually agreed to, which is why disputes are far easier to resolve when the terms are on paper.

The legal consequences that flow from a contract of service do not depend on how the agreement was documented. From the moment the relationship is one of employment, the full framework of workplace law applies to it, whether or not anyone signed anything.

The legal test: who is an employee?

The hard question is deciding whether a particular working arrangement is a contract of service at all. For decades the answer came from the common law, which weighed a list of factors such as the degree of control the business exercised, whether the worker could delegate the work to someone else, who supplied the tools and equipment, whether the worker bore financial risk, and how integrated the worker was into the business.

The High Court restated that approach in two decisions handed down on the same day in 2022: CFMMEU v Personnel Contracting Pty Ltd [2022] HCA 1 and ZG Operations Australia Pty Ltd v Jamsek [2022] HCA 2. In the second of those cases, delivery drivers who owned their own trucks and invoiced through their own partnerships were held to be independent contractors rather than employees, despite working continuously for decades. The Court confirmed that the parties' own description of the relationship does not decide it.

The Fair Work Act 2009 (Cth) now states the test in legislation. Section 15AA provides that whether someone is an employee is determined by ascertaining "the real substance, practical reality and true nature" of the relationship, looking at its totality. The section expressly says the assessment is not confined to the terms of the contract, and must also take account of how the contract is performed in practice. It was enacted in direct response to the two 2022 High Court decisions.

In practice, the factors a court, tribunal or regulator will weigh include:

• Control: who decides when, where and how the work is done
• Delegation: whether the worker can send someone else to do the work
• Tools and equipment: whether the business or the worker supplies them
• Financial risk: whether the worker is paid for time worked or for a result, and who bears the cost of mistakes
• Integration: whether the worker is part of the business or separate from it
• Entitlements: whether the worker receives paid leave, PAYG withholding and superannuation

No single factor decides the question. A worker can be an employee even if they invoice the business, and a genuine contractor can work exclusively for one client. The label in the contract, the tax treatment chosen, and the language the parties use are all relevant, but none of them is decisive against the working reality.

What attaches to a contract of service

Once a contract of service exists, a set of statutory entitlements attaches to it automatically. These cannot be contracted away, and they are the reason classification matters so much in practice.

The National Employment Standards (NES) in Part 2-2 of the Fair Work Act 2009 (Cth) set the minimum terms that apply to every employee. Section 61 lists the matters they cover: maximum weekly hours, flexible working arrangements, casual employment, parental leave, annual leave, personal and carer's leave, community service leave, long service leave, public holidays, superannuation contributions, notice of termination and redundancy pay, and the Fair Work Information Statement. Section 55(1) provides that a modern award or enterprise agreement must not exclude the NES, and an employment contract cannot undercut them either. A contract can give more than the NES, but never less.

Many roles are also covered by a modern award, which sets minimum pay rates, classification levels, allowances, loadings and penalty rates for the industry or occupation. Where an award applies, the contract and the payroll must meet or exceed its minimums.

Beyond the Fair Work Act, an employment relationship triggers tax and superannuation obligations. The Australian Taxation Office requires employers to withhold pay as you go (PAYG) tax from employees' wages, report and pay those amounts, and pay superannuation guarantee for eligible employees. If a business withholds PAYG from a worker, that is strong evidence the relationship is employment, which is one reason genuine contractor arrangements are paid by invoice without PAYG.

Finally, section 125 of the Fair Work Act 2009 (Cth) requires an employer to give each new employee the Fair Work Information Statement before, or as soon as practicable after, they start work. Casual employees must also receive the Casual Employment Information Statement.

Where the line is drawn: the contract for services

The contrast is a genuine independent contractor, engaged under a contract for services. A contractor runs their own business, agrees to deliver a specified result, decides how the work will be done, invoices for payment, and manages their own tax, insurance and leave. Employment entitlements do not attach to that relationship.

The boundary matters for a second reason: a business that labels an employment relationship as contracting can face serious consequences. Section 357 of the Fair Work Act 2009 (Cth) prohibits an employer from misrepresenting an employment contract as a contract for services, a practice known as sham contracting, and the prohibition is a civil remedy provision enforceable with penalties. A worker who is really an employee can also claim back-pay of wages, leave and superannuation for the whole period of the arrangement.

Superannuation has its own statutory extension. Under section 12(3) of the Superannuation Guarantee (Administration) Act 1992 (Cth), a person who works under a contract that is wholly or principally for their labour is treated as an employee for superannuation purposes, even if they are a contractor for everything else. A business that engages labour-only contractors on a long-term basis can still owe superannuation guarantee.

A worked example: the florist and the delivery driver

Marta runs a two-shop florist in Brisbane and wants to expand her delivery service. She engages Daniel to drive her van on weekday mornings, delivering orders on her routes between 8 am and midday. She gives him a branded polo shirt to wear, tells him the order of the drop-offs, and insists he drive the van himself because she wants the same person dealing with customers. Daniel is paid a weekly amount and does no work for anyone else.

On the section 15AA test, the real substance of the relationship is employment. Marta controls how, when and where the work is done, Daniel cannot delegate, the van and the tools are hers, and Daniel bears no financial risk. If Marta calls Daniel an independent contractor and pays him by invoice with no PAYG, super or leave, the label will not protect her: Daniel is an employee under a contract of service, and the NES, the applicable award, PAYG and superannuation all apply. The misrepresentation could also expose Marta to penalties under section 357.

Compare that with Petra, a freelance graphic designer Marta engages to refresh the florist's logo and website. Petra works from her own studio on her own software, quotes a fixed price for the project, invoices on completion, and can subcontract the work if she chooses. Her relationship is a genuine contract for services, and the employment framework does not apply to it. The difference between the two arrangements is not the label but the working reality.

Common misconceptions

The same misconceptions surface again and again in misclassification disputes:

• "If the contract says contractor, they are a contractor": This is the most expensive mistake a small business can make. Section 15AA directs attention to the real substance of the relationship, including how the work is performed in practice, not to the heading on the agreement. The High Court confirmed in 2022 that the parties' own description of the arrangement does not determine its legal character.

• "A contract of service has to be in writing": It does not. Verbal and implied employment contracts are legally binding, and the statutory entitlements apply to them exactly as they do to written contracts. A written contract is strongly recommended, but its absence does not remove the relationship from the NES or the awards system.

• "Casual workers are not employees": Casual employees are employees. They work under a contract of service, receive a casual loading instead of some paid leave entitlements, and are protected by the NES. The Fair Work Act 2009 (Cth) defines casual employment separately in section 15A, but a casual is not a contractor.

• "Contractors never attract superannuation or entitlements": A genuine contractor does not receive employee entitlements, but the superannuation legislation extends coverage to contractors paid wholly or principally for their labour. And a worker who is really an employee under the test attracts the full range of entitlements regardless of the contracting label.

• "A written contractor agreement protects the business": A well-drafted contractor agreement helps a genuine contractor relationship run smoothly, but it cannot convert employment into contracting. Courts and regulators look at the totality of the relationship, and a contract that is contradicted by how the parties actually behave will not prevail.

How an employment lawyer can help you get classification right

The point where most businesses get into difficulty is at the moment of engagement, when a decision is made about how a worker will be brought on. An employment lawyer can work through the section 15AA factors against the specific role you are filling, and tell you where the arrangement is likely to sit before any commitment is made.

Where a role is genuinely employment, a lawyer can identify the applicable award, check that proposed pay and hours meet the minimums, and draft an employment contract that records the terms cleanly. Where a contractor is the right structure, they can help you build an arrangement that reflects a genuine independent business, so the substance matches the label. For businesses that already have workers engaged, a lawyer can review existing arrangements, quantify any exposure to back-pay, superannuation or penalties, and help remediate with the Fair Work Ombudsman before a claim or audit finds the problem first.

The question to ask about every new hire

Before you engage anyone, describe their typical working week out loud: who sets the hours, who provides the tools, who decides how the work is done, and who carries the risk if something goes wrong. The honest answer to those questions is usually a reliable guide to whether you have a contract of service on your hands. The mistake that costs Australian businesses the most is treating the label on the agreement as decisive when the working reality is employment, because the NES, awards, PAYG and superannuation follow the reality, not the label. If the description sounds like employment, structure it as employment from day one, and get the classification checked before you sign.