Casual vs part-time: the Fair Work classification guide for labour hire agencies

Short version: under the Fair Work Act a worker is genuinely casual only if there is no firm advance commitment to continuing and indefinite work, and they receive a casual loading or a specific casual rate instead of paid leave. What matters is the real, practical nature of the relationship — not the label on the contract or the roster.

The current legal definition of a casual employee

The Fair Work Legislation Amendment (Closing Loopholes No. 2) Act 2024 introduced a statutory definition of “casual employee”, effective from 26 August 2024, which remains the operative test. A person is a casual employee at the start of their employment if:

1. the employment relationship has no firm advance commitment to continuing and indefinite work, taking into account a number of factors relating to the real substance, practical reality and true nature of the relationship — not just what the contract says; and
2. the employee is entitled to a casual loading or a specific casual pay rate under an award, registered agreement or employment contract, in lieu of paid leave entitlements.

The shift from the older approach is that courts and the Fair Work Commission look at the pattern of work as it actually plays out, not just the wording of the original offer. A worker engaged as “casual” who has in practice worked the same days and hours for months, with a clear expectation the arrangement continues, can be found to have a firm advance commitment in substance.

What actually distinguishes casual from part-time

The practical test the law pushes employers toward is this. If you could accurately describe the arrangement to a new starter as “we don’t know week to week whether we’ll need you, and you’re free to say no when we ask”, that is genuinely casual. If the honest description is “you work Tuesdays and Thursdays, every week, and we both expect that to continue”, the arrangement looks like part-time employment wearing a casual label.

Why this matters more for labour hire

• Regular placements at the same client site are common. A worker placed with the same client, on the same days, for months — because it suits everyone operationally — is exactly the pattern that can undermine a genuine casual classification, even though the agency’s workforce as a whole is highly variable.
• Volume amplifies small errors. One misclassification at a stable-team employer is a single dispute. The same pattern across hundreds of casuals is a systemic exposure.
• Casual loading offset is not a guarantee. If a worker is later found not to have been genuinely casual, the Fair Work Act includes provisions that can allow loading already paid to offset part of a subsequent leave claim — but that offset is not automatic in every circumstance. Getting the classification right avoids the dispute entirely.
• Client requests add complexity. A site asking for “the same three cleaners every week” is a reasonable operational request that, left unmanaged, quietly shifts a worker’s arrangement toward part-time-shaped work.

Casual conversion: the employee choice pathway

The old model — where employers had to proactively offer conversion to eligible long-serving casuals — has been replaced. Since 26 August 2024 the National Employment Standards operate on an employee choice pathway.

• A casual can give written notice that they want to change to permanent employment if they believe they no longer meet the casual definition.
• Eligibility generally opens after 6 months of employment — 12 months for a small business employer (fewer than 15 employees).
• Before responding, the employer must consult the employee, then respond in writing within 21 days, and can only refuse on specific grounds set out in the Act — for example that the employee still genuinely meets the casual definition, or that agreeing would require substantial changes to how the business operates.
• The onus is on the employee to initiate. The employer no longer has a standing obligation to offer conversion — but responding correctly and on time is a real obligation, not a formality.

For agencies, a casual placed regularly with the same client for six months or more may have a legitimate basis to give notice. That calls for a documented process for assessing and responding within the statutory window, rather than handling each one ad hoc.

What happens if a worker is misclassified

• Backpay exposure for paid leave that should have accrued — annual leave, personal and carer’s leave.
• Underpayment claims, where a genuinely permanent arrangement paid at a casual rate leaves the worker under-compensated relative to what was owed.
• Regulatory scrutiny, particularly where there is a pattern of long-term, regular placements labelled casual across many workers rather than an isolated case.
• Client and reputational risk, since an underpayment finding involving an agency’s workforce affects client confidence in its compliance standards generally.

What a good agency process looks like

Classification is a legal question, but most of what goes wrong is operational: nobody notices that a “casual” has been on the same two days at the same site for eight months. The practical defence is visibility and records.

• Be able to see the actual pattern. Shift history per worker, per client site, is the evidence that tells you whether an arrangement has drifted — before a claim does.
• Capture the engagement terms once, properly. Worker onboarding that records employment type, the casual loading basis and the worker’s own details at the start beats reconstructing it later.
• Keep an audit trail. Who approved what, and when, is what turns a disputed recollection into a record.
• Have a written response process for employee choice notices, so the 21-day window and the consultation step are never missed.
• Review long-running placements periodically rather than waiting for a notice to arrive.

If you’re also working through licensing obligations, our labour hire licence guide covers which states require one and who needs it.