Imperfect claim form may still be valid
(Chee v Choice Chemist Pty Ltd [2026] WADC 94)
The principal question to be decided by the Court was whether an incomplete workers’ compensation claim form given by the employee/worker to the employer, invalidates the claim form. More particularly, the Court had to determine whether the employer’s 14-day obligation to issue a liability decision or deferred decision notice was triggered. This was important because a failure to issue either notice within the prescribed period results in the employer being taken to have accepted liability for the injury and, liability for income compensation.
Facts
The worker sought to make a workers’ compensation claim for a work-related injury resulting in a disc bulge and associated neck, shoulder and arm pain. On 4 April 2025, she emailed a related company indicating that she wanted to initiate a workers’ compensation claim and asking what steps were required. On 10 April 2025, she provided:
- a workers’ compensation claim form; and
- a first certificate of capacity.
These were forwarded to the employer. The employer accepted that it had received both documents but contended that the claim form was not a “completed claim form in the approved form” as required by the Workers Compensation and Injury Management Act 2023.
The claim form omitted answers to three questions. As a result, the employer did not issue a liability decision or deferred decision notice within 14 days of receiving the first claim form. On 9 May 2025, the employer asked the worker to provide the missing information. She did so that day by submitting a second claim form. A deferred decision notice was subsequently issued on 12 May 2025, followed by a liability decision on 9 June 2025 rejecting the claim.
The arbitrator’s decision
The arbitrator concluded that the worker had not provided a completed claim form and considered the omitted facts relating to the occurrence to be critical to the claim and found that the form needed to be completed fully, accurately and truthfully. On that basis the arbitrator also rejected the worker’s claim form and reliance on it being valid.
The worker appealed.
The District Court’s decision
The Court held that the worker had not provided a completed claim form. The missing occurrence details were material and meant that the form was incomplete. The Court rejected the argument that “completed” merely meant that the worker had substantially filled in the form. The purpose of requiring a completed approved form is to provide the employer with the information necessary to make a liability decision within the 14-day period under s 28.
Therefore, an incomplete claim form can remain an incomplete claim form even though the defect does not ultimately invalidate the claim, because a failure, defect or inaccuracy in a claim form, certificate of capacity or claim details does not invalidate the claim where:
- the failure, defect or inaccuracy results from mistake, absence from the State or another reasonable cause; or
- the failure, defect or inaccuracy would not prejudice the employer’s defence in proceedings arising from the claim.
The Court found that the omission resulted from mistake and concluded that the worker had misunderstood the first question and that the failure to answer the remaining questions was an oversight. The Court also noted that:
- the worker had already provided the relevant information in an earlier email;
- the certificate of capacity contained some relevant details; and
- there was no apparent reason why the worker would deliberately leave the form incomplete.
Consequence for the employer
The Court concluded that the worker’s claim was made when she gave it to the employer:
- the claim form, albeit incomplete; and
- the first certificate of capacity.
The defects did not invalidate the claim and the employer was required to issue either:
- a liability decision notice within 14 days; or
- if it could not make a decision, a deferred decision notice within 14 days.
The employer did neither with the consequence being that the employer was deemed to have accepted liability.
Key principle from the case
The most important proposition from Chee v Choice Chemist Pty Ltd [2026] WADC 94 is:
A claim form can be incomplete for the purposes of s 25(2), yet the claim may nevertheless be valid because s 25(5) prevents the defect from invalidating it. Where s 25(5) applies, the employer’s obligations under s 28 are triggered and the employer cannot avoid the 14-day decision/deferred-decision requirement merely because the claim form was defective.
Practical significance for WA workers’ compensation
This is a significant decision under the new WCIMA 2023 regime because it prevents an employer/insurer from treating an imperfect claim form as effectively a non-claim where s 25(5) preserves the claim.
In practical terms, an incomplete claim form should not simply be ignored. If the defect is capable of being cured or protected by s 25(5), the employer should still treat the claim as activating the s 28 14-day decision/deferred-decision regime. The failure to do so may result in deemed acceptance of liability.
The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.
vice should be sought about your specific circumstances.









