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Pay, Payroll & Working Time

What are Part-time hours?

Updated 20 Jan 2026 5 min read

Part-time hours refer to a regular pattern of work that is less than full-time hours (38 per week) in Australia. Part-time employees have agreed, ongoing hours specified in their employment contract and receive pro-rata entitlements based on the hours they work compared to a full-time employee.

Part-time vs casual employment

Part-time and casual are both types of employment with less than full-time hours, but they differ significantly in structure, entitlements, and flexibility. Understanding this distinction is essential for correct classification under Fair Work.

Part-time

  • Agreed regular hours (less than 38)
  • Ongoing employment
  • Pro-rata leave entitlements
  • Hours specified in contract

Casual

  • No guaranteed hours
  • No ongoing commitment
  • 25% loading instead of leave
  • Hours offered as needed

Part-time employment provides more stability and ongoing entitlements, while casual offers flexibility for both employer and employee. Misclassification can lead to back-payment claims.

Calculating part-time entitlements

Part-time employees receive pro-rata entitlements based on their ordinary hours compared to full-time (38 hours per week). The calculation is straightforward:

Pro-rata calculation

Pro-rata % = (Part-time hours ÷ 38) × 100

20 hours/week: 52.6% of full-time entitlements
25 hours/week: 65.8% of full-time entitlements
30 hours/week: 78.9% of full-time entitlements
35 hours/week: 92.1% of full-time entitlements

Part-time hours and overtime

Understanding when overtime applies to part-time employees is important. It varies by award, but common rules include:

  • Beyond agreed hours: Many awards treat hours beyond the agreed contract hours as overtime
  • Beyond 38 per week: Hours exceeding full-time equivalent always attract overtime rates
  • Daily maximums: Some awards trigger overtime for daily hours beyond a certain limit (e.g., 8 hours)
  • Additional hours: Some awards have "additional hours" (at ordinary rate) before overtime kicks in

Part-time contract requirements

Part-time employment must be documented with agreed hours. The Fair Work definition requires a "regular pattern of hours" that is "reasonably predictable". If hours vary significantly week to week with no pattern, the arrangement may actually be casual employment.

Benefits of part-time employment

For employers

  • Flexibility: Match staffing to demand patterns
  • Committed staff: More stability than casuals
  • Cost management: Lower leave liabilities than full-time
  • Wider talent pool: Attract those seeking flexibility

For employees

  • Work-life balance: More time for other commitments
  • Leave entitlements: Pro-rata annual and personal leave
  • Job security: Ongoing employment relationship
  • Predictable hours: Known schedule for planning

Common mistakes with part-time hours

Treating part-timers as casuals

Employees with regular, predictable hours should be part-time (with leave entitlements), not casual. Misclassification can result in back-pay claims.

Not documenting agreed hours

Part-time employment requires a written agreement specifying the regular pattern of hours. Without this, the arrangement may not meet the legal definition.

Regularly exceeding agreed hours without updating contract

If a part-time employee consistently works more than their contracted hours, the contract should be updated to reflect actual hours—or overtime paid.

Incorrect pro-rata calculations

Leave and other entitlements must be calculated based on actual ordinary hours vs 38. Getting this wrong leads to under or over-accrual.

Key takeaways

Part-time hours are regular, agreed hours less than 38 per week. Part-time employees have ongoing employment and receive pro-rata entitlements based on their hours compared to full-time. Clear documentation of agreed hours is essential, and hours beyond the agreement may attract overtime rates.

RosterElf's rostering software helps manage part-time schedules by tracking agreed hours against actual hours worked, automatically calculating pro-rata entitlements, and alerting you when additional hours might trigger overtime under your applicable award.

Frequently asked questions

Steve Harris

Written by

Steve Harris

Steve Harris has spent over a decade advising businesses in hospitality, retail, healthcare, and other fast-paced industries on how to hire, manage, and retain great staff. At RosterElf, he focuses on sharing actionable advice for business owners and managers — covering everything from smarter interview techniques and compliance with Australian employment laws, to building positive workplace cultures.

General information only – not legal advice

This glossary article about part-time hours provides general information about Australian employment law and workplace practices. It does not constitute legal, HR, or professional advice and should not be relied on as a substitute for advice specific to your business, workforce, or circumstances.

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RosterElf helps Australian businesses manage rosters, track time and attendance, and stay compliant with Fair Work requirements. Try it free for 14 days.

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