Several practical and interpretive risks are apparent from the text of the regulation. These are points where the regulation’s short text creates potential compliance ambiguity, implementation discretion, or operational traps for retailers and enforcers. Each identified point is grounded in the regulation’s wording.
Undefined threshold for "major part". Section 3(a) grants an exemption where "the sale of knives is not a major part of the person’s retail business". The regulation does not define "major part", nor does it supply a quantitative test or threshold. This omission leaves the classification open to fact-sensitive interpretation. The regulation does not state who determines whether the condition is met, or what evidence suffices. That creates an enforcement and compliance uncertainty for retailers seeking to rely on the exemption (s 3(a)).
Exact sign wording and placement. The sign’s text is prescribed verbatim and must be displayed "at each place where knives are displayed for sale" (s 3(b)). That raises a practical compliance point for multi-counter stores, display cabinets, temporary displays, online interfaces, and marketplaces. The regulation does not clarify whether an online display counts as a "place", or whether a single centrally placed sign in a store with multiple separate display points suffices. The minimum type-size requirement "no smaller than 12 point" is a measurable standard, but the regulation does not address overall sign size, visibility standards, or language/translation issues (s 3(b)).
Sign text - "may be required". The sign wording states that "Proof of age may be required", which is permissive rather than mandatory. The regulation does not create a duty to check age in any particular case; it only requires the sign to state that proof of age may be required. That may create consumer expectations or operational uncertainty about when and how proof of age should be requested, but the regulation itself does not specify any procedural obligations beyond displaying the sign (s 3(b)).
Ambiguous exclusions. Section 4 excludes "a blade that is not a knife blade or a blade forming part of any of the following: (i) a machete; (ii) a cleaver; (iii) a sword." The phrasing raises two interpretive points. First, the phrase "a blade that is not a knife blade" suggests a category of blades distinguished from "knife blades", but the regulation provides no definition of "knife blade" for the purpose of that contrast. Second, the listed items (machete, cleaver, sword) are excluded, but those items are blades that may be presented and sold in retail contexts; the regulation does not address how sales of those items interact with other Act provisions. The wording could lead to disputes about whether a particular implement is a "knife" or excluded under s 4.
No enforcement or evidentiary guidance. The regulation creates conditions for an exemption without specifying enforcement mechanisms, burden of proof, or administrative processes for resolving disputes about exemption applicability. The instrument does not say who enforces compliance, how compliance is demonstrated, or what penalties apply for failing to display the sign where required by the Act. Only the endnotes record the penalty-unit value at the republication date for offences against the republished law.
Record-keeping and proof. Because the "major part" test is undefined, retailers relying on the exemption may want to retain contemporaneous records demonstrating the proportion of sales attributable to knives. The regulation does not require such records, but lack of them may make it harder to defend an exemption assertion during enforcement proceedings. The regulation does not prescribe what constitutes sufficient evidence.
Potential mismatch between statutory obligations. The regulation exempts some retailers from the Act’s sign-display requirement, but it does not affect other potential criminal or civil obligations that might attach to sale of knives under the Crimes Act 1900 or other legislation. The absence of cross-references to other duties means that compliance with the regulation’s sign provision is not the sole legal consideration for retailers selling knives.