Part-time employees and your obligations as an Australian employer

Hiring a part-time employee brings the same core legal obligations as hiring a full-time one: correct classification, minimum pay, paid leave, superannuation, records and lawful termination. What changes is how those obligations are calculated. Most entitlements for part-time staff accrue pro-rata on their ordinary hours, and the rules around those hours are where small businesses most often get into trouble.

The obligations come from three sources. The National Employment Standards (NES) in the Fair Work Act 2009 (Cth) set minimum entitlements that apply to every employee. The modern award covering the role sets rates, penalty rates, overtime and breaks. Superannuation law sets what you must pay into the employee's fund. None of these can be contracted away, and a "flexible" arrangement that ignores them is usually just an underpayment waiting to be discovered. This guide sets out who the obligations apply to, the duties themselves, and what happens if you miss them.

Who the obligations apply to

If your business is a private sector employer in Australia, you are almost certainly a national system employer and the Fair Work Act applies to you. The NES in Part 2-2 of the Act covers every employee you hire, part-time included. On top of that, most roles are covered by a modern award, and where no award or enterprise agreement applies, the national minimum wage sets the floor.

A part-time employee is someone who works less than 38 hours per week with hours that are usually regular each week, typically on a permanent basis or a fixed-term contract. Two thresholds matter for your compliance:

• The 38-hour line: A part-time employee's ordinary hours are fixed below full-time hours. Those hours are the baseline for pay, leave accrual and overtime.
• Award coverage: Awards define part-time employment in their own terms and commonly include specific rules about how a part-time employee's hours of work are recorded. Check the award for your industry before you set the roster.

The classification question matters most at the boundary with casual employment. Under s 15A of the Fair Work Act, an employee is a casual only if the relationship is characterised by an absence of a firm advance commitment to continuing and indefinite work, assessed on the real substance of the relationship, and the employee receives a casual loading or casual rate. If you roster someone regularly with a set pattern of hours but pay them like a casual, you are exposed to back-pay claims for the paid leave they should have accrued. Casual employees can also notify you if they believe they no longer meet the casual definition, which can force a reclassification conversation.

Document the terms in writing

A written contract is the practical starting point for compliance, because it fixes the facts that every other obligation hangs off: the classification, the ordinary hours, the rate, and how changes are handled. For a part-time employee, a contract should cover:

• Employment type: confirming the person is a part-time employee
• Ordinary hours: with the days, start and finish times, and total weekly hours
• Rate of pay: and whether an award applies
• Overtime and penalty rates: for hours worked outside the ordinary pattern
• Leave entitlements: and how they accrue
• Superannuation: details
• Notice and termination: terms consistent with the NES
• Variation mechanics: for changing hours and rosters

Many modern awards go further and contain specific arrangements for how a part-time employee's hours of work must be recorded. If the agreed days and hours are not properly documented, or the mechanism for varying them is unclear, extra hours fall into a grey zone where they may attract overtime or penalties, or become the subject of a dispute about what was actually agreed. If your rosters genuinely change week to week, your contract and your processes need to reflect that lawfully rather than pretending the pattern is fixed.

Pay the right rate, including penalties and overtime

You cannot choose an hourly rate that feels fair. The minimum rate comes from the award, the enterprise agreement, or failing both, the national minimum wage. From 1 July 2026 the national minimum wage is $26.44 per hour for award-free adult employees, with casual employees getting a 25 per cent loading on top.

Paying above the base rate does not switch off the rest of the award. Penalty rates, allowances and overtime rules continue to apply depending on the hours worked and the employee's classification. Common triggers include:

• working outside the award's span of hours or outside the employee's rostered ordinary hours
• weekend and public holiday work
• hours beyond the employee's agreed part-time hours

Do not assume that "part-time" means "no overtime". Under many awards, hours worked beyond the agreed part-time pattern can attract overtime rates even where the employee has not worked full-time hours in total. If you use "all-in" rates or an annual salary for a part-time employee, check that the employee is not worse off overall against their minimum award entitlements, and keep payroll records that let you prove it.

Pay superannuation on time

Part-time employees are eligible employees for superannuation purposes. The super guarantee rate is 12 per cent of ordinary time earnings, in place since 1 July 2025. The timing is changing: from 1 July 2026, Payday Super requires you to pay super for each payday rather than accumulating the liability to a quarterly deadline. Make sure your payroll system calculates super on every pay run and that the fund details are collected before the first payment is due.

Late or missed super is not a quiet problem. The ATO can recover the shortfall through the Super Guarantee Charge, which includes interest and an administration component, and it can pursue penalties on top. Super is also part of the record-keeping and final-pay picture, so a casual approach to timing creates paperwork risk as well as cash risk.

Provide pro-rata leave entitlements

Part-time employees get the same NES leave entitlements as full-time employees, calculated on their ordinary hours. The two that cause the most payroll confusion are annual leave and personal/carer's leave.

Under s 87 of the Fair Work Act, a part-time employee accrues four weeks of paid annual leave per year (five for award-defined shiftworkers), accruing progressively according to their ordinary hours of work. Practically, this means tracking leave in hours, not weeks. A "week" of leave for a part-time employee is the hours they would otherwise have worked, so a full-timer's week is not the unit that matters.

Paid personal/carer's leave works the same way. Under s 96 of the Fair Work Act, an employee accrues 10 days per year progressively according to ordinary hours. A part-time employee working 19 hours a week, for example, accrues roughly half of a full-time employee's 76 hours a year, and when they take the leave they are paid for the hours they would have worked.

One entitlement is not pro-rated: paid family and domestic violence leave of 10 days per year applies in full to part-time employees. Other NES entitlements, including unpaid parental leave and compassionate leave, may also apply depending on the employee's circumstances and length of service. Break entitlements come from the award, so check the shift-length rules in your industry rather than assuming the default applies.

Treat roster changes as variations

Once you have agreed a part-time employee's regular hours in writing, changing them is a variation of the employment terms. That does not mean rosters cannot change. It means you should:

• check the award or enterprise agreement for notice periods, rostering rules and consultation obligations
• follow the variation clause in the contract, if there is one
• confirm ongoing changes in writing

The two scenarios that create disputes are cutting hours in a downturn without following the process, and adding "top-up" hours without checking the rate. Depending on the award, extra hours beyond the agreed pattern may be payable at ordinary rates by written agreement, or they may attract overtime or penalty rates, and minimum shift lengths may apply. Your roster and payroll systems should capture both the agreed hours and the additional hours actually worked, so the correct rate is applied every time.

Keep records and issue pay slips

Under s 535 of the Fair Work Act, you must make and keep employee records for seven years covering hours worked, rates of pay, leave taken and superannuation contributions, and you must issue a pay slip for each pay run. This is a civil remedy provision, so a records failure is itself a contravention.

The more serious risk is evidential. If you have not kept proper records, s 557C of the Act shifts the burden: you bear the onus of disproving an employee's underpayment allegation. In practice, disputes about part-time hours often come down to who can prove what was worked and paid. Clean records do not just defend you, they let you find and fix an underpayment before it becomes a Fair Work matter.

End the employment lawfully

The NES requires written notice of the day of termination, with minimum notice periods that scale with length of service, or payment in lieu of notice if you want the employee to finish immediately. Your contract may add to this within what the law allows, and the award may impose additional steps.

Final pay is more than the hours worked up to the last day. It can include unused annual leave (and leave loading if the award provides it), unpaid penalty or overtime rates, and outstanding allowances or reimbursements. If the role is genuinely redundant, NES redundancy pay may also apply unless the small business exemption does. A clear contract and accurate leave records make the final pay calculation straightforward instead of a negotiation.

What happens if you get it wrong

Contravening the NES is a civil remedy provision under s 44 of the Fair Work Act. Courts can order pecuniary penalties of up to 60 penalty units per contravention for an individual and five times that for a body corporate, with higher maximums for serious contraventions, plus orders for back-pay and compensation. The Fair Work Ombudsman investigates underpayment complaints, can issue compliance notices, and can take employers to court. Employees can enforce their own entitlements as well, so a single disgruntled part-timer can trigger a review of your whole payroll.

Misclassification carries its own price tag. If a worker is truly part-time but engaged as casual, the exposure is the paid leave that never accrued, plus penalties. If they are casual but treated as part-time, the exposure runs the other way on loading. The cost of getting it wrong is usually the back-pay bill, not the classification itself.

A compliance checklist for your first part-time hire

Before you take on your first part-time employee, work through this checklist:

• Confirm award coverage and the correct classification before advertising the role
• Give the new employee the Fair Work Information Statement on their first day
• Sign a written contract setting out the classification, ordinary hours, rate, leave and variation mechanics
• Pay award rates, penalty rates and overtime correctly from the first pay run
• Pay super at 12 per cent, on each payday from 1 July 2026
• Track annual leave and personal/carer's leave in hours, pro-rated to ordinary hours
• Keep records for seven years and issue a pay slip for every pay run
• Follow the award and contract process before changing or ending the arrangement

Where a lawyer helps

Employment lawyers are most useful before problems crystallise: mapping which award covers a role and whether the classification is defensible, drafting the contract and hours-of-work clauses so they match how the business actually runs, and reviewing payroll set-ups for penalty, overtime and super obligations. If the Fair Work Ombudsman has contacted you, or an employee has raised an underpayment or termination dispute, legal advice early can contain the scope of a claim that records and process would otherwise have prevented.

The hours you actually work

Every obligation in this article connects back to one thing: the gap between the hours you agreed and the hours the employee actually worked. The record-keeping duty is the one most often treated as admin, but s 557C makes it decisive, because without records you carry the burden of disproving an underpayment claim. This week, for each part-time employee, write down the agreed ordinary hours, check the award's part-time hours rules, and make sure payroll captures every additional hour at the right rate. Do that and the rest of the system has something reliable to build on.