Maximum Working Hours Per Week In Australia: Employer’s Legal Guide

Running a business comes with lots of moving parts - and making sure your team’s hours are lawful is one of the big ones.

If you’re asking “how many hours can employees work each week in Australia?”, you’re not alone. Getting this right helps you stay compliant, protect your people from fatigue risks, and build a healthy workplace culture.

In this guide, we break down the legal maximum weekly hours under the National Employment Standards (NES), when additional hours can be “reasonable”, how awards and enterprise agreements affect rosters, and what to do about overtime, penalties and time off in lieu.

Use this as a practical roadmap to set up your rosters, contracts and policies the right way - and avoid costly mistakes.

What Are The Maximum Weekly Hours Under The NES?

The Fair Work Act 2009 (Cth) sets maximum weekly hours for most employees covered by the national workplace relations system. These limits are part of the National Employment Standards (NES) and cannot be contracted out of.

• Full-time employees: a maximum of 38 hours per week.
• Employees other than full-time (for example, part-time): the employee’s ordinary hours of work, which are the hours agreed in the contract or instrument that applies to them.

On top of these limits, an employer can request an employee to work “reasonable additional hours.” Whether extra hours are reasonable is assessed case-by-case (more on this below).

Part-Time Employees

Part-time staff have agreed ordinary hours set out in their contract (for example, 20 or 30 hours a week). Those ordinary hours are their weekly maximum for NES purposes, unless reasonable additional hours are requested and worked.

Casual Employees

Casuals don’t have guaranteed hours, but they’re still protected: they cannot be required to work unreasonable additional hours. Casual loading compensates for the lack of paid leave, but it does not remove the need to manage maximum hours, fatigue and breaks properly.

Employees vs Contractors

Importantly, the NES applies to employees. Independent contractors are not covered by the NES. If you engage contractors, you still need to manage work health and safety risks and ensure the engagement is genuinely a contracting arrangement, but the maximum weekly hours rules do not apply to contractors.

How Is A “Week” Calculated And Can Hours Be Averaged?

Under the Fair Work Act, a “week” is a seven‑day period starting on Monday. This matters for how you plan rosters, monitor hours and assess compliance.

In some workplaces, hours aren’t the same each week. The law anticipates this by allowing averaging in certain circumstances.

Averaging Of Hours

• Modern awards and enterprise agreements: many instruments expressly allow hours to be averaged over a specified period (for example, across two or four weeks), with rules about maximum daily/shift lengths and overtime triggers.
• Award/agreement-free employees: the Act also allows averaging by agreement in limited circumstances. If you want to average hours for employees not covered by an award or enterprise agreement, ensure the arrangement complies with the Act and that the overall pattern (including any additional hours) is reasonable.

If you’re considering averaging arrangements, check any applicable award or enterprise agreement first. Where you are award-free, record the arrangement clearly in an Employment Contract and ensure it does not undermine NES protections.

Awards, Agreements And Daily Limits You Must Follow

Most employees are covered by a modern award or enterprise agreement that sets the spread of ordinary hours, any daily caps, minimum breaks and overtime/penalty rules. These instruments sit alongside the NES and can be more specific or prescriptive than the Act.

Modern Awards And Enterprise Agreements

• Ordinary hours: where and when ordinary hours can be worked (e.g. Monday–Sunday, specific time windows), and the maximum ordinary hours per day or per shift.
• Overtime triggers: when overtime starts (e.g. after a certain number of hours in a day or week, or outside the ordinary span of hours).
• Breaks: rules for paid/unpaid meal breaks and rest pauses.
• Averaging: any allowed averaging period and conditions.

Because these rules differ by industry and classification, it’s smart to confirm award compliance before setting rosters or approving extra hours.

Daily Caps And Breaks

The NES sets maximum weekly hours, not maximum daily hours. Daily limits are generally found in awards or enterprise agreements. Even where no instrument applies, you still need to manage fatigue and provide reasonable breaks to meet your health and safety obligations.

If daily limits are unclear for your team, review any applicable instrument, consider your maximum working hours per day obligations, and embed requirements in Workplace Policies or contracts so expectations are clear.

Break compliance isn’t optional - plan rosters to accommodate required meal breaks and rest pauses, and keep records to demonstrate you’ve provided them.

Managing Overtime, Penalties And Time Off In Lieu

When employees work beyond their ordinary hours, or at certain times (such as late nights, weekends or public holidays), extra compensation usually applies. The detail is driven by awards or enterprise agreements.

Common Entitlements

• Overtime rates: higher rates for work beyond the daily or weekly ordinary hours threshold. See how overtime rates typically apply.
• Penalty rates: higher rates for work during specified times (for example, Sundays or public holidays), even if total weekly hours are within the ordinary cap.
• Time off in lieu (TOIL): time off instead of paid overtime where the instrument allows it and the employee agrees in writing. Set out the rules in a TOIL clause or policy that aligns with your instrument and the NES. You can implement compliant time off in lieu frameworks to manage costs and fatigue.

Paying base rates for extra hours when a higher rate is required can lead to significant underpayment liability, including back pay and interest.

When Are Additional Hours “Reasonable”?

Whether additional hours are reasonable depends on all the circumstances, including:

• The employee’s health and safety - risk of fatigue, the length of shifts and recovery time between shifts.
• The employee’s personal circumstances (for example, caring responsibilities).
• The needs of the workplace and the role’s level/seniority.
• Whether the employee is entitled to overtime/penalties and whether those entitlements will be provided.
• Any notice given by the employer and any notice of refusal by the employee.
• Any applicable award/enterprise agreement terms and industry practices.

Employees may refuse unreasonable additional hours. They must not be treated adversely for exercising this right.

Changing Hours, Rostering And Staying Compliant

Rosters evolve as customer demand, staffing and seasons change. The key is consulting properly, providing required notice, and documenting changes.

Varying Ordinary Hours

• Check the instrument: most awards and agreements set consultation obligations and minimum notice for changing rosters or hours.
• Consult and document: discuss proposed changes with affected staff, confirm what’s agreed, and record variations in writing (for example, by letter of variation to the Employment Contract).
• Notice and minimum engagement: some instruments require a minimum number of hours per shift and set rules for cancelling or altering shifts.

If you routinely adjust rosters, build a robust process for changing rosters that includes advance notice, consultation and acknowledgment from employees.

Health And Safety Considerations

Hours management is not just an industrial issue - it’s also a safety issue. Long or irregular hours raise fatigue risks, especially in safety‑critical environments.

Make sure your scheduling practices align with your duty to provide a safe workplace, supported by training, reporting, and a clear fatigue management policy. For context on employer obligations, see your general duty of care.

Record-Keeping And Policies

Accurate time and wages records are essential. They help you verify compliance, answer audits, and resolve disputes quickly.

Codify expectations in a Staff Handbook or Workplace Policies covering hours of work, breaks, overtime approvals and TOIL. Consistent policy application across teams reduces risk and improves fairness.

Enforcement And Risks

• Claims and audits: non‑compliance can trigger Fair Work Ombudsman investigations. If contraventions are proven, a court can order back pay and impose civil penalties.
• Work health and safety exposure: excessive hours can increase incident risk and potential liability under WHS laws.
• Culture and retention: sustained overwork drives burnout and turnover. Clear boundaries and fair compensation help retain great people.

Key Takeaways

• The NES caps full‑time employees at 38 hours per week, and other employees at their ordinary weekly hours, with only “reasonable” additional hours permitted.
• A “week” is a seven‑day period starting on Monday; averaging is only lawful where allowed by an award, enterprise agreement or (for award‑free staff) a compliant agreement.
• Modern awards and enterprise agreements set crucial detail - daily limits, the spread of ordinary hours, breaks, overtime triggers and penalty rates - so always check what covers your team.
• Overtime, penalty rates and approved time off in lieu are central to lawful compensation when hours go beyond ordinary patterns.
• When changing hours or rosters, follow your instrument’s notice and consultation rules, document the changes, and prioritise safety and fatigue management.
• Lock in compliance with a clear Employment Contract, practical Workplace Policies, and confirmed award compliance across roles.

If you would like a consultation regarding maximum working hours compliance or any aspect of employment law for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.