The introduction of the Employee Choice Pathway under the Fair Work Act 2009 has shifted the balance of responsibility in casual employment. While employees now hold the right to request permanent conversion, employers remain legally bound to respond in full compliance with the Act. For HR Managers and Legal Counsel, this process represents a critical compliance risk: an unlawful or poorly substantiated refusal can escalate to the Fair Work Commission (FWC) and expose the business to adverse action or unfair dismissal claims.
The legislation allows only two legally valid grounds for refusal:
- The employee continues to meet the true definition of a casual, or
- The employer has “fair and reasonable operational grounds” for declining the request.
It is this latter ground narrow, technical, and fact-dependent that requires the most careful legal and evidentiary support.
Understanding the Narrow Scope of “Fair and Reasonable Operational Grounds”
A statement such as “it’s not in the business’s best interests” is not a defendable basis for refusal. The Fair Work Act requires that any rejection must rest on genuine, objective business needs. In essence, these operational grounds are intended to protect businesses only when a conversion would significantly and disproportionately disrupt essential operations.
Under the Act, there are three core operational grounds for refusal, each of which must be justified by facts that are known or reasonably foreseeable at the time:
- Substantial changes to work organisation – where conversion would require major restructuring of teams, rosters, or workflows.
- Significant impact on business operations – where the change would cause measurable detriment to productivity, service delivery, or efficiency.
- Non-compliance with a Fair Work Instrument (Award or Agreement) – where the employee’s conversion would breach award provisions (e.g. minimum hours, rostering, overtime).

Defendable Case Examples in Practice
To lawfully rely on operational grounds, an employer must show a clear, direct, and unmanageable business consequence arising from the employee’s conversion. Below are two examples illustrating defendable refusals.
Example 1: Organisational Change and Award Compliance
A large national retailer employs a long-term casual who regularly works short, flexible shifts during peak hours (e.g. four 3-hour evening shifts and two 4-hour weekend shifts). The employee requests conversion to part-time.
However, the relevant Modern Award mandates a minimum 3-hour engagement for part-time employees, along with strict break and rostering requirements. Converting this role would require the employer to completely restructure the store’s evening roster to maintain compliance imposing rigidity that would reduce flexibility, increase labour costs, and undermine operational coverage during peak trading periods.
Here, the employer may defensibly rely on the ground of “substantial changes to the way work is organised”. The refusal is not about avoiding permanency, but about the unavoidable award-driven organisational impacts that conversion would impose.
Example 2: Business Impact and Foreseeable Redundancy
An engineering firm specialising in project-based infrastructure work employs casual engineers for 9–12-month project cycles. A casual engineer, after 10 months of full-time hours, requests conversion.
At the time of the request, management holds documented evidence, client contracts, budget forecasts, and project schedules showing that the current project will conclude in four months, with no new projects foreseeable within the next eight months.
Converting the employee to permanent status would immediately create a redundancy risk, as the role would soon cease to exist. This is a valid “significant impact on business operations” ground for refusal, supported by tangible, time-stamped evidence demonstrating that conversion would impose an unsustainable headcount liability contrary to the business’s project-based model.
How NB Employment Law Protects Employers
The “fair and reasonable operational grounds” test demands a sophisticated blend of legal understanding and business insight. NB Employment Law (NBEL) works closely with employers to mitigate litigation risk and ensure defensible compliance.
Our key services include:
- Risk Audit and Strategic Advice
Conducting privileged audits of your casual workforce to identify high-risk roles and document operational needs, ensuring future refusals are factually and legally supported. - Response Drafting and Legal Review
Preparing or reviewing written refusal notices to ensure that each decision is clearly reasoned, evidence-based, and compliant with Fair Work obligations dramatically reducing the likelihood of a successful FWC challenge. - Consultation Strategy and Compliance Guidance
Advising on proper consultation procedures and ensuring every communication reflects procedural fairness and good faith, as required under the Act. - Dispute Resolution and Advocacy
Representing employers in FWC conciliations or arbitrations, defending operational decisions, and protecting against adverse action or unfair dismissal claims.
Rejecting a casual conversion request is not merely an HR decision it is a legal act subject to scrutiny. By ensuring that refusals rest on genuine, evidence-backed operational grounds, employers can safeguard both their compliance posture and workforce stability.
NB Employment Law partners with businesses to turn complex compliance challenges into defensible, strategic management practices protecting your organisation while upholding the integrity of the Employee Choice Pathway.