Pro Rata Sick Leave Entitlements In Australia Explained

If you’re hiring staff in Australia, paid sick leave (also called personal/carer’s leave) is one of those entitlements you need to get right from day one. It accrues over time, it’s pro rated for part-time employees and starters/leavers, and it interacts with other rules like evidence requirements and notice.

The good news is that once you understand how the National Employment Standards (NES) work, calculating pro rata sick leave becomes a straightforward process you can build into payroll and your employment paperwork.

In this guide, we’ll break down who gets paid sick leave, how it accrues, how to calculate pro rata amounts in common scenarios, and the practical steps to manage requests fairly and compliantly.

What Is Pro Rata Sick Leave Under The NES?

Under the Fair Work system, full-time and part-time employees (not casuals) are entitled to paid personal/carer’s leave that accrues progressively during the year based on ordinary hours of work.

For a full-time employee working 38 ordinary hours per week, the entitlement is 10 days per year. Because the entitlement is based on hours (not “calendar days”), it scales pro rata for part-time hours or where someone starts or finishes partway through a year.

If you’re new to the concept of accruals, it helps to remember that personal/carer’s leave builds up gradually with each pay period. You can read a deeper overview of how leave accrues in our explainer on do sick days accrue in Australia.

Who Is Eligible For Paid Sick Leave?

Eligibility depends on the employee’s engagement type:

• Full-time employees: Accrue 10 days per year of paid personal/carer’s leave.
• Part-time employees: Accrue paid personal/carer’s leave on a pro rata basis, calculated from their ordinary hours.
• Casual employees: Do not receive paid personal/carer’s leave under the NES, but are entitled to 2 days of unpaid carer’s leave per occasion. Employers can still require reasonable evidence for absences, and our guide to medical certificates for casual employees covers what’s appropriate.

Personal/carer’s leave is available when an employee is unwell, or to care for an immediate family or household member who is ill or has an unexpected emergency. Many modern awards and enterprise agreements add detail to these rules, so always check the applicable instrument for your workforce.

How Do You Calculate Pro Rata Sick Leave?

Accrual is based on hours worked, not “days” in the everyday sense. The NES uses the employee’s ordinary hours to derive an annual entitlement equal to 10 “working days” of their typical workday.

The Basic Formula

For full-time employees (38 ordinary hours per week):

• Annual entitlement = 10 days x 7.6 hours per day = 76 hours per year.

For part-time employees, scale the annual hours entitlement by their ordinary hours:

• Annual entitlement (hours) = 76 hours x (part-time ordinary hours ÷ 38).

Accrual is then progressive across the year, usually per pay period. Many payroll systems calculate a per-hour accrual rate and add it automatically to the leave balance as ordinary hours are worked.

Pro Rata For Starters And Leavers

If someone starts or leaves partway through the year, they accrue based on their actual continuous service during that period.

• Monthly accrual guide for full-time (approx): 76 hours ÷ 12 ≈ 6.33 hours per month of service.
• For part-time, calculate the annual part-time entitlement first (as above), then divide by 12 for a monthly guide (or use payroll’s per-pay-period calculation).

Example: A part-time employee works 20 ordinary hours per week. Annual entitlement = 76 x (20 ÷ 38) ≈ 40 hours per year. If they work 6 months, they accrue ≈ 20 hours over that period.

Changing Hours During Employment

Accrual aligns with the hours worked during each period. If an employee changes from full-time to part-time (or vice versa), their future accrual rate adjusts from the date of change. Existing accrued balances generally carry over and remain available to be taken as paid leave (paid at the base rate for the applicable hours taken).

If you’re planning a change to someone’s hours, it’s worth aligning your paperwork and payroll settings. For guidance on the process and employer obligations, see changing employee status from full-time to part-time.

What About Shift Workers And Irregular Rosters?

The entitlement still accrues based on ordinary hours. When paid sick leave is taken, it’s paid at the employee’s base rate for the hours they would have worked (excluding loadings or overtime), unless an award or agreement specifies otherwise. If rosters vary, base leave on the ordinary hours the employee was scheduled to work on the day(s) of absence.

Managing Sick Leave Requests, Evidence And Record-Keeping

To rely on paid personal/carer’s leave, employees should let you know as soon as possible that they’re unwell and unable to work, and for how long they expect to be away. You can ask for evidence that would satisfy a reasonable person the leave was taken legitimately-typically a medical certificate or a statutory declaration for shorter absences where appropriate.

It’s best practice to set these expectations clearly in your documentation. A well-drafted Employment Contract should outline personal/carer’s leave and evidence requirements, and you can complement this with a clear, accessible Workplace Policy that covers how to notify absences, what evidence is required, and how accruals work in your business.

For payroll compliance, keep accurate records of ordinary hours, accruals, leave taken, and any evidence provided. A good payroll system helps you automate pro rata calculations and maintain audit-ready records in line with Fair Work obligations.

Can You Ask For A Medical Certificate?

Yes-provided your request is reasonable in the circumstances (for example, length or timing of the absence). Many employers ask for a medical certificate after two consecutive days off, or where there is a pattern of absences.

If you employ casuals, remember that while their carer’s leave is unpaid under the NES, you can still require reasonable evidence. Our short guide on medical certificates for casual employees has practical tips.

What If An Employee Runs Out Of Paid Sick Leave?

Employees who’ve exhausted paid personal/carer’s leave may be able to access unpaid carer’s leave or make arrangements such as annual leave, time off in lieu, or other options available under their award or agreement. Some employers also consider discretionary paid special leave in specific circumstances to support staff wellbeing and continuity.

For a sensible process that reduces risk and maintains trust, follow a clear pathway for evidence, check the relevant instrument, and document any alternative arrangements in writing. We’ve put together a practical guide to managing employee sick leave when entitlements run out.

Common Scenarios And How Pro Rata Sick Leave Works

1) New Starters Mid-Year

Sick leave accrues from the employee’s first day of employment. If someone starts in, say, September, they simply accrue a portion of the annual hours entitlement across the remaining months of the year. Your payroll should show a gradually increasing balance each pay period.

2) Employees Switching From Full-Time To Part-Time

Accrual adjusts on the effective date of the change in ordinary hours. Existing balances are still available; they don’t vanish or “convert”-they’re a bank of paid leave hours employees can draw down when unwell. This is a good moment to double-check roster practices and ensure your contract and policies reflect the new arrangement, especially if you’ve updated hours formalities using your Employment Contract.

3) Probation Periods And Evidence

Paid personal/carer’s leave accrues during probation like any other period of continuous service and can be taken during probation if needed. You can still require reasonable evidence during this period-just make sure your approach is consistent and in line with your policy and any applicable award.

4) During Notice Periods

If an employee is genuinely unwell during their notice period, they can usually access paid personal/carer’s leave if they have a balance. You may request evidence as usual. For related issues, employers often review how leave interacts with exit processes and entitlements-our guide to calculating final pay explains what typically forms part of the final payment (note that paid personal/carer’s leave is not paid out on termination under the NES).

5) Shutdowns And Stand Downs

Accrual continues during paid ordinary time. During unpaid periods (e.g. some stand downs), check the applicable award/enterprise agreement and the Fair Work rules to confirm whether service and accrual are affected. If you anticipate unusual operating periods, communicate early with staff and confirm arrangements in writing.

What Happens To Unused Sick Leave? Is It Paid Out?

Under the NES, unused paid personal/carer’s leave carries over year to year and keeps accumulating-there’s no cap under the minimum standards. However, it’s generally not paid out when employment ends (unless a contract, policy, award or enterprise agreement provides otherwise).

For a practical summary of carry-over and payout rules, see what happens to unused sick leave. If you want your internal rules to go further than the NES minimums (for example, offering additional discretionary sick leave), make sure that’s clearly documented and consistent with the rest of your employment terms.

Set Yourself Up: Contracts, Policies And Payroll Settings

The simplest way to stay compliant and avoid disputes is to build clear rules into your onboarding and payroll from the outset.

• Employment Contract: Set out entitlements, accrual mechanics, and evidence requirements in your Employment Contract for full-time and part-time staff.
• Workplace Policies: Translate the rules into day-to-day processes-notification timing, who to contact, and what evidence is required-in a consistent Workplace Policy.
• Payroll Configuration: Check your system’s leave accrual settings for each employee type so it applies the right pro rata rates automatically and records balances and leave taken.
• Manager Training: Ensure supervisors understand when to ask for evidence and how to respond to requests fairly and consistently.
• Communication: Provide new starters with a simple “how sick leave works here” summary during induction, and remind teams of processes during flu season.

If you operate across multiple awards or have mixed employee types, it’s wise to review your arrangements annually-particularly as awards, case law and best practice evolve. If complex scenarios crop up (e.g. repeated absences, safety concerns, or return-to-work plans), seek advice early so you can support the employee and manage risk appropriately.

Finally, remember that sick leave is part of a broader personal/carer’s leave framework. If you’re setting up or reviewing your approach to absences, it can help to step back and look at the full picture-from how leave accrues to how you handle evidence, and what to do when paid leave runs out. Our guide to managing sick leave when entitlements run out is a helpful companion piece.

Key Takeaways

• Full-time and part-time employees accrue paid personal/carer’s leave progressively, based on ordinary hours; pro rata applies for part-time hours and for starters/leavers.
• Accrual is hour-based (10 days per year for a full-time employee equals 76 hours), which payroll can apply per pay period for accurate, ongoing balances.
• Casuals don’t get paid sick leave under the NES but can be asked for reasonable evidence for absences and may access unpaid carer’s leave in certain situations.
• Unused paid sick leave carries over year to year and generally isn’t paid out on termination unless an instrument or contract says otherwise.
• Clear documentation is essential: align your Employment Contract and Workplace Policy with your payroll settings to manage notice, evidence and accruals consistently.
• If you’re unsure about edge cases-like varying rosters, mid-year changes in hours or repeated absences-get tailored advice early to prevent disputes and stay compliant.

If you’d like a consultation on setting up or reviewing pro rata sick leave entitlements in your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.