Hours In A Working Week: Employer’s Guide To Australian Law

Getting working hours right isn’t just about ticking a compliance box. It affects your team’s wellbeing, your budget, and the overall performance of your business. As an employer in Australia, you’re balancing rosters, customer demand and cost control - all while staying on the right side of the law.

In this guide, we break down what a standard working week looks like under Australian law, how “reasonable additional hours” work, where overtime and penalty rates come in, and how to set up practical systems so your business stays compliant and your people stay supported.

If you’ve ever asked “how many hours can employees work each week?” or “do I have to pay overtime for those extra shifts?”, you’re in the right place.

What Does Australian Law Say About A Standard Working Week?

The starting point for working hours in Australia is the National Employment Standards (NES) within the Fair Work Act. These apply to most employees in the national system, regardless of whether they’re covered by a Modern Award or Enterprise Agreement.

Maximum Weekly Hours

The NES sets maximum weekly hours as follows:

• Full-time employees: up to 38 hours per week.
• All other employees (including part-time and casual): the lesser of 38 hours or their ordinary hours of work.

Employees can be asked to work “reasonable additional hours” on top of this. Whether extra hours are reasonable depends on factors like health and safety risks, personal circumstances (e.g. caring responsibilities), the needs of the workplace, any overtime entitlements, how much notice was given, and the usual industry patterns. Employees also have the right to refuse unreasonable additional hours.

These maximums apply to casual employees, too - not only when their engagement becomes “regular and systematic”. Casuals don’t have guaranteed hours, but the cap on maximum weekly hours and the test for reasonable additional hours still apply.

Ordinary Hours For Different Types Of Employment

• Full-time: usually 38 ordinary hours per week (often spread over five days).
• Part-time: ordinary hours are fewer than 38 per week and agreed in the contract or award - they should be reasonably predictable.
• Casual: no guaranteed ordinary hours, but any agreed pattern of work should align with award or agreement rules (e.g. minimum engagement periods and rostering standards).

On paper, 38 hours a week sounds straightforward. In practice, your award or agreement may set specific daily limits, spread of hours (when ordinary hours can be worked), minimum shift lengths, and different rules for shift work. Always check the industrial instrument that applies to your business.

How Many Hours Can Employees Work Each Day And Week?

There’s no single, universal “maximum hours per day” across all industries in the NES. Daily limits and the spread of hours are usually set by the relevant Modern Award or Enterprise Agreement - along with how overtime is triggered.

Reasonable Additional Hours: What To Consider

When you’re deciding whether to roster or approve extra hours, the “reasonable additional hours” test matters. Key considerations include:

• Any risk to health and safety (fatigue, physical demands, travel time).
• The employee’s personal circumstances and family responsibilities.
• The needs of the workplace or business at the time.
• Whether the employee is entitled to overtime rates or penalty rates for those hours.
• How much notice you gave (and how much notice the employee gave if they can’t work).
• Industry norms and the employee’s role and level of responsibility.

Good rostering and clear communications go a long way. If you change rosters at short notice, make sure you’re meeting your award or agreement obligations and consider your legal requirements for employee rostering.

Fortnightly And Monthly Planning

For planning purposes, 38 hours per week equates to 76 hours per fortnight for a full-time employee. Some awards permit averaging of hours over a period (e.g. a roster cycle) as long as the average does not exceed the maximum weekly hours and any award conditions are met. If you average hours, document the arrangement and ensure your payroll setup correctly recognises overtime triggers across the averaging period.

Changing Rosters And Hours

Rosters can change as your business changes - but changes must follow your award or agreement. There are often minimum notice requirements, limits on last‑minute changes, and rules about consulting employees. If you need to adjust patterns of work, review the applicable instrument and your contracts, and consider the guidance on changing employee rosters so you can stay compliant.

Ordinary Hours, Overtime And Penalty Rates: What’s The Difference?

Understanding the line between ordinary hours and overtime is crucial to paying your team correctly and avoiding underpayment issues.

Ordinary Hours

Ordinary hours are the hours your employee ordinarily works, within the spread of hours set by the award or agreement. They’re usually paid at the base rate of pay. For part‑time workers, ordinary hours must be agreed in writing and should be reasonably predictable.

Overtime

Overtime is typically hours worked outside ordinary hours, above a maximum daily or weekly threshold, or outside the agreed spread of hours. Most awards set clear rules for when overtime applies and the rates you must pay. For a deeper dive, see how overtime rates operate in practice and how they interact with different rostering patterns.

Penalty Rates

Penalty rates are higher rates paid for working at particular times or on particular days (for example weekends, public holidays, late nights or early mornings). These are set by awards and enterprise agreements and are separate from overtime - though an hour can sometimes attract both (e.g. overtime on a Sunday), depending on the instrument’s rules.

Time Off In Lieu (TOIL)

Some awards allow time off instead of payment for overtime, known as TOIL. TOIL must be arranged strictly in line with your award or agreement (usually in writing, within a set timeframe, and at the equivalent overtime value). If you want to use TOIL, set up a clear process and track it carefully. You can read more about managing Time Off In Lieu as part of your overtime strategy.

Breaks, Rest Periods And Time Between Shifts

Unlike maximum weekly hours, the NES doesn’t prescribe universal meal and rest break rules for all employees. In most workplaces, breaks are set by the applicable Modern Award or Enterprise Agreement, with some protections also arising under work health and safety laws.

Meal And Rest Breaks

• Meal breaks: Most awards require at least one unpaid meal break (often 30–60 minutes) after a certain number of hours.
• Rest breaks: Short paid rest breaks (sometimes called tea breaks) may be required depending on shift length.
• Shift work: Longer or additional breaks may apply under shift work provisions.

Because break rules vary significantly between industries, always check your award or agreement. For an overview of common break rules and compliance tips, see Fair Work Breaks.

Rest Between Shifts And Maximum Daily Shifts

Rest between shifts (for example, 10–12 hours off between shifts) and maximum daily shift lengths are also award or agreement-based. Many instruments cap how long a single shift can run, require minimum breaks before the next shift, and set limits around quick returns. If your operations run late into the night or across 24/7 rosters, factor these limits into your scheduling tool so you’re not accidentally breaching the rules.

Health And Safety Comes First

Even if your award permits certain rosters, you still have a duty under work health and safety laws to manage fatigue risks. That includes monitoring long runs of shifts, travel time, heavy or hazardous work, and providing adequate rest. Document your approach in your policies and train managers to recognise fatigue risks early.

Practical Steps To Structure Hours Legally In Your Business

Putting the rules into practice is where employers can slip up. These steps help you design hours that are compliant, predictable and fair - and that support your team’s wellbeing.

1) Confirm Your Award Or Agreement Coverage

Identify which Modern Award or Enterprise Agreement applies to each role. One business can be covered by multiple awards across different roles. The award will set the spread of hours, overtime triggers, penalties, minimum engagements and break rules - and these sit on top of the NES maximum weekly hours.

2) Use Clear, Tailored Contracts

Set ordinary hours, employment status and overtime arrangements in writing. For full‑time and part‑time roles, specify ordinary hours and the pattern of work. For casuals, reflect minimum engagement periods and how rosters are issued. A well‑drafted Employment Contract will help prevent disputes and align pay rules with the award provisions you rely on.

3) Build A Transparent Rostering And Approval System

Rostering should be predictable and consultative. Use tech to track hours, flag overtime triggers, and keep an auditable record of changes and approvals. If your business needs to change patterns of work, make sure your processes align with the rules for changing employee rosters.

4) Manage Overtime Proactively

Decide whether you’ll pay overtime, use TOIL (if permitted) or restructure staffing to reduce overtime altogether. Document your approach in your staff policies so managers have clear guidance. When in doubt, check your award and keep an eye on total weekly hours to ensure anything “additional” remains reasonable and safe.

5) Document Policies And Train Managers

Set out how breaks are scheduled, how overtime and TOIL work, and how fatigue is managed. A practical Staff Handbook that covers rostering, breaks and overtime helps managers apply the rules consistently and supports compliance alongside your contracts. If you’re creating or upgrading policies, see our guide to a clear, workable workplace policy and staff handbook.

6) Keep Accurate Records

Accurate time and wages records - including start and finish times, breaks, and overtime - are compulsory. Poor record‑keeping can lead to underpayment claims even if you intended to pay correctly. Ensure your payroll system, timesheets and approvals align with your award and reflect what’s happening on the floor.

7) Review Regularly And Adjust

Awards change, businesses evolve, and rostering needs shift across the year. Schedule an annual review of your hours model, overtime patterns and contracts to confirm you’re still compliant and your settings reflect how your business really operates.

Common Pitfalls To Avoid

• Assuming 38 hours is always ordinary: many awards define ordinary hours differently and restrict when they can be worked.
• Missing overtime triggers: awards often trigger overtime daily, weekly or outside the spread of hours - not just beyond 38 hours.
• Breaks not taken or recorded: break breaches are common and easily preventable with clear scheduling and manager training.
• Informal TOIL: TOIL must meet strict award rules; otherwise, overtime should be paid in cash.
• Shifting rosters too fast: many awards require specific notice or consultation before changes take effect.

If you identify issues in your arrangements, it’s better to correct them early than wait for a complaint or audit.

Flexible Work Requests

Some employees have a legal right to request flexible working arrangements (for example, parents of school‑aged children, carers, or those with a disability). You must consider these requests and respond in line with the law and any applicable award provisions. If you agree to a new pattern, formalise it in writing and make sure the new arrangement still complies with award rules and maximum weekly hours.

Budgeting For Additional Hours

Overtime and penalty rates can add up quickly, particularly in industries with weekend or late‑night trade. Build these into your budget and plan staffing levels to reduce unnecessary overtime. If extended hours are routine, review your resourcing - you may be better off hiring or redistributing hours rather than relying on costly overtime. For a refresher on the rules, revisit the basics of Australian overtime laws and how the thresholds apply under your award.

Key Takeaways

• The NES caps work at 38 hours per week for full‑time employees and, for others (including casuals), the lesser of 38 hours or their ordinary hours, with only reasonable additional hours permitted.
• Daily limits, spread of hours, breaks, overtime triggers and penalty rates are set primarily by your Modern Award or Enterprise Agreement - check these first.
• Overtime, penalties and TOIL must be managed strictly in line with your instrument; track approvals and keep accurate records to avoid underpayment risk.
• Break rules aren’t universal under the NES; most break and rest‑between‑shifts entitlements come from awards and work health and safety obligations.
• Clear Employment Contracts, predictable rostering and practical policies are essential to control costs, support your team and stay compliant.
• Review your arrangements regularly, especially if you’re changing rosters, averaging hours or seeing sustained overtime, and align your practices with your rostering obligations.

If you would like a consultation on setting compliant working hours, drafting overtime and TOIL processes, or reviewing awards and contracts for your team, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.