10/12 Limit for Casuals and Contractors

If you roster casual staff (or engage contractors) you’ve probably heard someone mention the “10/12 limit”. It usually comes up when:

a “casual” starts working every week like a permanent employee;
you’re trying to keep flexibility in rostering (especially in hospitality, retail, trades and events); or
someone asks whether a worker is really a contractor, or whether they should be on payroll as an employee.

For small businesses, the risk isn’t the phrase itself - it’s what it points to. If a worker’s hours become predictable and ongoing, your legal obligations can change, and the costs of getting it wrong can be significant.

Below, we break down what people usually mean by the “10/12 limit” in practice, why it matters, and what you can do to keep your business compliant while still running a flexible workforce.

What Is The 10/12 Limit (And Is It A “Real” Legal Rule)?

In Australia, the “10/12 limit” is sometimes used as a rule of thumb to describe a casual work pattern that starts to look regular and systematic (a phrase used in some legal contexts).

Put simply, it’s shorthand for this idea:

If someone works in a regular pattern for around 10 out of 12 weeks (or a similar time-based pattern), that consistency may be a sign you should review whether the arrangement is still being treated as casual in practice.

Important: The “10/12 limit” is not a formal, universal legal test in Australia. Whether a worker is a casual employee (and what obligations apply) depends on the Fair Work Act, any applicable Modern Award or enterprise agreement, and the facts of the arrangement. What applies to you can depend on factors like:

the worker’s real work pattern (not just what the contract says);
whether a Modern Award or enterprise agreement applies (many include their own rules about rostering, conversion and minimum engagement);
the casual conversion rules under the Fair Work Act;
whether the employment is offered and accepted with an advance commitment to continuing and indefinite work according to an agreed pattern of work (as defined in the Fair Work Act); and
how you manage offers of shifts, acceptance, cancellations, and ongoing expectations.

So, treat the “10/12 limit” as a compliance red flag. If you’re approaching it (or already past it), it’s a good time to review your arrangements.

Why This “Rule Of Thumb” Exists

Casual employment is designed for genuine flexibility: irregular hours, uncertainty about future work, and shifts offered and accepted as needed.

But in many small businesses, casuals can slowly become “set and forget” staff - working the same days, every week, for months. When that happens, the legal system may look past the label and focus on what’s really going on.

Why The 10/12 Limit Matters For Small Businesses

If a casual worker starts to look like they’re working permanent hours, the key risks for your business tend to fall into three buckets:

1) Casual Conversion Risk (And Ongoing Employment Expectations)

Under the national workplace relations system, eligible casual employees may have rights relating to conversion to permanent employment (depending on circumstances and any applicable instrument).

Even where conversion is not automatic, a consistent pattern makes it far more likely the worker will:

ask to convert to part-time or full-time;
argue they had an expectation of ongoing work; or
challenge changes to their roster as unfair or unreasonable.

This is where policies and documentation matter. A well-drafted Employment Contract can help set expectations, including how shifts are offered and accepted.

2) Backpay And Entitlement Exposure

If a worker is misclassified (or their arrangement is not managed properly), businesses can face claims for things like:

annual leave and paid personal/carer’s leave (if the person should have been permanent);
notice of termination (depending on the situation);
minimum hours, penalty rates, and other Award-based entitlements; and
superannuation issues (depending on how they’ve been paid and classified).

Even if you’ve paid a casual loading, misclassification can still create disputes and time-consuming compliance work.

3) Operational Risk When Rosters Change

Small businesses often need flexibility - quiet weeks, weather disruptions, last-minute bookings, supply issues, you name it.

But once a worker’s roster becomes predictable, changes and cancellations can trigger legal issues, especially where an Award applies or where your own rostering practices create an implied expectation. It’s worth having a clear approach to cancellation and shift changes, including understanding shift cancellation policy expectations in Australia.

How The 10/12 Limit Plays Out In Casual Employment

If you’re employing casuals, the practical question isn’t “Have they hit 10/12 exactly?” It’s “Does their work pattern look like ongoing, predictable employment?”

Here are common scenarios where the 10/12 limit gets raised.

Scenario A: Same Shifts Every Week

If your casual works:

every Monday and Thursday,
for the last 3 months,
at the same start and finish times,

that looks much closer to part-time employment than casual, even if you still call them a casual.

Scenario B: Rolling Rosters That Are “Basically Permanent”

Some businesses rotate casuals on a roster, but in practice the same person gets 30+ hours most weeks. If you’re relying on them like a permanent team member, there’s a good chance they’ll rely on you the same way.

Scenario C: Your Business Cancels Shifts Often (And It Causes Disputes)

A classic small business pain point: you roster a casual, trade drops, you cancel the shift, and they push back hard.

If the work has been consistent for months, cancellations can become a flashpoint - especially if the Award or contract requires minimum notice or minimum engagement. Many employers look into minimum notice for cancelling casual shifts once this becomes an issue.

What Should You Track Internally?

To manage risk early, track:

weeks worked (e.g. did they work most weeks over the last 12 weeks?);
regularity (same days/times?);
average hours over a rolling period;
whether shifts are actually offered and accepted each time (or assumed); and
any communications suggesting guaranteed ongoing hours.

Good records make it easier to handle a conversion request, a dispute, or simply a fair renegotiation of expectations.

What Should You Do If A Casual Is Approaching (Or Past) The 10/12 Limit?

If you notice a casual has worked a consistent pattern - especially something like “10 out of the last 12 weeks” - it’s usually time to decide what you want the relationship to be going forward.

Here are practical options, depending on your business needs.

Option 1: Keep Them Casual, But Rebuild Genuine Casual Practices

This might be appropriate if your business genuinely needs flexibility and the worker’s pattern became regular by accident (for example, peak season dragged on longer than expected).

Steps could include:

tightening up how shifts are offered and accepted (avoid “standing shifts” that feel guaranteed);
making sure cancellations and changes are handled consistently with the contract and any Award;
reviewing your internal rostering practices so “casual” doesn’t become a default permanent roster; and
updating your paperwork so it matches reality.

Be careful here: changing someone’s established pattern without consultation can create conflict. It’s best handled thoughtfully and documented clearly.

Option 2: Convert To Permanent Part-Time (Often The Cleanest Solution)

If the person is working regular hours and you want to keep them long-term, part-time employment can be a great fit.

It gives your business predictability and gives the worker a clear arrangement around:

guaranteed minimum hours,
leave entitlements,
notice requirements, and
clear expectations about roster changes.

This is also where a tailored employment contract (and the right policies) really matter, particularly if you operate under a Modern Award.

Option 3: Adjust The Role Or Staffing Mix

Sometimes the underlying issue is that you’re using one “casual” to plug what is actually a permanent staffing need.

In that case, consider whether you should:

split the hours across multiple genuine casuals, or
create a permanent role for coverage and use casuals for genuine peaks.

The goal isn’t to game the system - it’s to align your staffing model with how your business actually runs.

Option 4: If The Arrangement Is Ending, Exit Carefully

Ending casual employment can still carry risk if the person argues they were effectively permanent, or if there are Award obligations around minimum notice or process.

If you’re ending the relationship, it’s worth checking your approach against practical guidance on how to legally terminate casual employment so you don’t create an avoidable dispute.

10/12 Limit And Contractors: When “ABN Workers” Start Looking Like Employees

Many small businesses use contractors to stay flexible, access specialised skills, or manage workload fluctuations. That’s completely normal.

The risk is when someone is labelled a contractor (often because they have an ABN), but the legal position may still be employment. Following recent High Court decisions, the starting point is usually the rights and obligations set out in the contract (where that contract is comprehensive and not a sham), not just how the relationship plays out day-to-day.

While the “10/12 limit” is typically discussed in the context of casual employees, a steady “most weeks” pattern can still be a practical prompt to review contractor arrangements too - particularly if the contract and the reality don’t line up.

If a contractor works a steady pattern for you most weeks, it may be time to check whether the contract reflects a genuinely independent business arrangement.

Common Red Flags That A “Contractor” Might Be An Employee

These are some practical indicators that can create risk (especially when combined with a regular pattern of work):

The contract gives you significant control over how, when and where work is done (rather than focusing on an outcome).
They can’t subcontract or delegate the work (or can only do so with tight restrictions).
They’re integrated into your team (uniform, staff meetings, company email, managed like an employee).
They’re paid like an employee (hourly rate, ongoing roster) rather than for a specific project or outcome.
They work mostly (or only) for your business, and the arrangement restricts work for others.

Even if they invoice you, those factors can still point toward an employment relationship, particularly where the contract (and what actually happens) resembles employment.

Why Getting Contractor Classification Wrong Is Costly

If a contractor is later found to be an employee, your business may face issues like:

backpay and entitlements (including leave-related claims, depending on the circumstances);
superannuation exposure;
tax and payroll compliance clean-up; and
penalties for sham contracting in serious cases.

This is why having the right paperwork matters from the start. A properly drafted Contractors Agreement helps clarify the relationship, scope, and independence - but it still needs to match how you actually operate day-to-day, and it shouldn’t be used to dress up what is really employment.

If They “Work Under An ABN”, Is That Enough?

No. Having an ABN does not automatically make someone a contractor. The terms of the contract and the real substance of the arrangement are what count.

If you’re unsure, it’s worth reviewing the basics of working under an ABN and checking whether your arrangements truly reflect independent contracting.

A Practical Compliance Checklist For Small Businesses Using Casuals And Contractors

Here’s a simple way to pressure-test your workforce setup if you’re concerned about the “10/12 limit”.

1) Check Which Instrument Applies

Start by identifying whether your staff are covered by:

a Modern Award,
an enterprise agreement, or
an award-free arrangement (less common than many people think).

This affects minimum shift lengths, overtime and penalty rates, rostering rules, and conversion pathways.

2) Audit Working Patterns Monthly

Don’t wait for a dispute. Set a recurring monthly check for casuals and long-term contractors:

How many weeks have they worked recently?
Is it the same pattern each week?
Are you relying on them as core staff?

If a casual is regularly working most weeks (like a “10 out of 12” pattern), treat it as your prompt to review next steps.

3) Make Rostering And Cancellations Consistent

Many disputes aren’t about whether someone is “casual” - they’re about surprises: shift changes, cancelled shifts, or reduced hours that feel unfair.

If your business needs flexibility, set expectations clearly, and make sure you understand your obligations around shift changes and cancellations (including the practical realities discussed in cancelling casual employee shifts).

4) Use The Right Agreements (And Keep Them Updated)

Your contracts should match the relationship you are actually running:

Casual employees: use a casual employment contract and keep it consistent with your rostering approach.
Contractors: use a contractor agreement that clearly sets out scope, payment terms, independence, IP ownership (if relevant), and dispute processes.

If you’re scaling or changing how you engage staff, update the documents at the same time. Outdated contracts are a common source of avoidable risk.

5) Have A Plan For When A Casual Becomes “Permanent In Practice”

Some casuals will naturally evolve into key staff members - that’s not a bad outcome. The key is to recognise it early and transition cleanly.

From a business perspective, it’s usually better to proactively move someone into a part-time role than to keep them “casual” on paper while treating them like a permanent employee in reality.

Key Takeaways

The “10/12 limit” is best thought of as a practical warning sign that a casual (or even a long-term contractor arrangement) may need review because the work is becoming regular and ongoing.
It’s not a standalone legal rule, but it can flag real compliance issues around casual conversion, entitlements, rostering disputes and worker classification.
If a casual is working predictable hours most weeks, you should consider whether a permanent part-time arrangement is a better fit for your business long-term.
For contractors, a regular “10/12-style” pattern can also signal risk - but classification usually turns on the contract’s rights and obligations (and whether it’s genuine), not just the work pattern.
Strong contracts and consistent rostering practices help protect your business, but your paperwork must match how the relationship works in practice.

Note: This article is general information only and not legal, tax or accounting advice. If you’re unsure about PAYG withholding, superannuation, payroll tax or invoicing/ABN arrangements, it’s a good idea to speak with your accountant and/or check guidance from the ATO.

If you’d like help reviewing your casual employment arrangements or contractor setup, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.

How the 10/12 Limit Applies to Casuals and Contractors in Australia