The Act identifies and binds a small set of market participants and leaves out others by specific exclusion. The principal affected categories are:
Producers. The statutory definition of "producer" captures a person by whom or on whose behalf wine grapes are grown for sale, and also includes partners where grapes are grown by a partnership and parties to a share farming agreement (s 3(1), paragraphs (a) and (b)). The definition expressly excludes employees and other persons who acquire no interest in the grapes. Practically, the Act targets individuals or business entities who hold the ownership interest in grapes destined for sale. Producers are a consultative constituency: the Minister must consult representatives of producers before making price recommendations or fixing payment terms (s 7(1)) and producers may make submissions under s 7(2).
Processors. The Act defines "processor" inclusively to mean a person who purchases wine grapes for processing, and expressly includes persons who purchase grapes for resale to a processor (s 3(1), definition of processor). That extension captures intermediaries and agents who buy grapes with the intent to resell to an actual processor. Processors face direct duties: they must not accept delivery of grapes for processing if the processor has unpaid sums from earlier seasons, unless an exemption exists (s 9(1)). Processors are also subject to implied contract terms set by the Minister under s 6. The statute forbids differentiation between processors when setting payment terms (s 6(2)), so processors collectively are subject to uniform statutory terms unless the Minister sets exemptions.
Members of registered co-operatives. The Act expressly does not apply to the sale of wine grapes by a member of a registered co-operative to that co-operative (s 4). That carve-out removes a specific intra-cooperative sale from the statutory regime. Therefore producers who are cooperative members selling to their cooperative are outside the Act’s reach for those particular sales.
Buyers of processed product. Section 3(2) creates an attribution rule where grapes supplied to a processor for processing and the product derived from processing is sold to that processor or another processor. In those circumstances the contract of sale is taken to be a contract for the sale of the grapes by the supplier to the processor who purchases the product. In effect, buyer relationships in a supply chain can be characterised as sales to the eventual purchaser of the processed product, thereby pulling certain downstream contractual relationships into the Act’s ambit.
The Governor and the Minister. The Governor may extend the production area by regulation (s 3(1)(g)). The Minister has multiple decision-making functions which directly affect parties: recommending indicative prices (s 5), fixing payment terms (s 6), consulting parties (s 7), making, varying and revoking orders (s 8), granting and revoking exemptions (s 9(3)-(4)), and authorising prosecutions (s 10(3)). Thus compliance and enforcement outcomes turn substantially on Ministerial and Governor action.
Persons making submissions or engaging in consultation. The Act identifies an open class of persons who may make submissions and engage in discussions related to the Minister’s exercise of powers under the Act (s 7(2)). That captures industry groups, advisors, and potentially individual stakeholders who want to influence orders or exemptions.
Geographical scope. The production area is specified in s 3(1) by named local government areas, hundreds and counties, and may be expanded by the Governor by regulation. So the Act is geographically limited until the Governor alters that map.
Secondary market intermediaries. Because a "processor" includes persons who purchase grapes for resale to a processor, brokers or agents who buy temporarily and resell are captured, and therefore their acceptance, payment and contract arrangements will be regulated as if they were processors.
Other excluded or unaffected parties. The Act’s reach is purposive to grapes for processing into wine, must, juice or grape spirit. Sales that fall outside "wine grapes" as defined would not be captured. The Act does not affect the sale of grapes by members to registered co-operatives (s 4). The text does not create a licensing regime or registration requirement for processors, but it does impose statutory constraints on their purchasing and acceptance behaviour.
In short, producers (owners of grapes), processors (broadly defined, including resellers), cooperative members selling to their co-op, the Minister and the Governor are the main decision-makers and obliged actors under the regime established by the Act.