Many retail shop owners assume that 'casual' and 'part-time' are interchangeable. They are not.
Misclassifying an employee can lead to back-pay claims, penalties, and even general protections claims.
This article explains the legal differences under the Fair Work Act, including leave entitlements, termination rules, and the new definition of 'casual' following the 2021 Omnibus Act and 2023 legislative changes.
Legal Definition – What Makes a Casual Employee?
Under the Fair Work Act (as amended in 2021 and 2024), a casual employee is defined by two key features:
- No firm advance commitment to continuing and indefinite work.
- The employer can offer work, and the employee can accept or reject each shift without penalty.
Additionally, a casual employee is entitled to a casual loading (at least 25%) in lieu of paid leave.
This loading compensates for the lack of annual leave, personal/carer's leave, and public holiday pay.
Important change (2024): A casual employee who works a regular pattern of hours for 6 months can now request conversion to full-time or part-time. Employers cannot unreasonably refuse.
Legal Definition – What Makes a Part-Time Employee?
A part-time employee is a permanent employee who works fewer than 38 hours per week.
Key features:
- Has a firm advance commitment to continuing work (ongoing employment).
- Has guaranteed minimum hours each week (written agreement required).
- Receives all NES entitlements on a pro-rata basis: annual leave, sick leave, public holidays, parental leave, redundancy pay.
- No casual loading – base rate only.
Part-time employees cannot be 'let go' without proper notice or a valid reason (unfair dismissal applies).
Comparison Table – Key Legal Differences
- Guaranteed hours: Casual = No; Part-time = Yes (written agreement).
- Paid annual leave: Casual = No; Part-time = Yes (pro-rata 4 weeks).
- Paid sick/carer's leave: Casual = No; Part-time = Yes (10 days pro-rata).
- Public holiday pay: Casual = No (only if they work, receive penalty rate); Part-time = Yes (paid day off).
- Casual loading: Casual = Yes (minimum 25%); Part-time = No.
- Notice of termination: Casual = None (can be dismissed without notice); Part-time = 1-4 weeks (depending on service).
- Redundancy pay: Casual = No; Part-time = Yes (up to 16 weeks).
- Right to request flexible work: Casual = No (unless after 12 months); Part-time = Yes.
Casual Conversion – A New Legal Right
Since the Fair Work Amendment Act 2021, casual employees have the right to request conversion to permanent employment (part-time or full-time) if:
- They have been employed for at least 6 months (or 12 months for small business).
- They have worked a regular pattern of hours for the last 6 months without significant adjustment.
- They can continue working those hours as a permanent employee.
Employers can only refuse on reasonable grounds (e.g., the position will cease to exist, hours will significantly reduce, or it would breach other laws).
Common Mistakes Retail Employers Make
Avoid these costly classification errors:
- Calling someone 'casual' but requiring them to work the same fixed shifts every week. That is part-time under the law.
- Not giving part-time employees a written agreement outlining minimum hours. The agreement must be signed and kept on file.
- Paying casual loading to a part-time employee – they are not entitled to it.
- Firing a casual employee for refusing a shift. That is legal. Firing them for making a complaint about safety – that is a general protections claim (up to $70,000 in penalties).
Real case: A Melbourne retailer classified staff as casual but rostered them 9am-5pm Monday to Friday for 2 years. The Fair Work Commission ordered $86,000 in back-pay for unpaid annual leave and sick leave, plus penalties.
Which Is Better for Your Shop?
Choose casual if: You have unpredictable trade, seasonal peaks, or need fill-in staff for sick leave.
Choose part-time if: You have stable weekly hours, want to build loyalty and reduce turnover, or want to avoid conversion requests.
Many shops use a mix: 60% part-time (core team) and 40% casual (flexible pool).
In summary, never guess. Classify in writing, review regularly, and seek advice from the Fair Work Ombudsman's free helpline if unsure.