Philosophy
Delegated Legislation and the Principle of Ultra Vires
Quick fact
The term 'ultra vires' is Latin for 'beyond the powers.' In law, any delegated legislation made beyond the authority granted by Parliament is void from the start—not just voidable, but null and void, having no legal effect whatsoever.
Why this is interesting
Imagine a city council passing a rule that fines you $500 for walking your dog without a permit—but the law that created the council never gave it that power. Is that rule legally binding? The answer lies in a principle called ultra vires.
Read the full explanation
Understanding Delegated Legislation and the Principle of Ultra Vires
Delegated legislation means that Parliament, instead of drafting every rule itself, gives another body (like a government minister or local council) the power to make rules on its behalf. Think of it as a parent giving a babysitter permission to decide what the kids can eat, but only for foods in the fridge—the babysitter can't go out and buy pizza without asking. The parent's instructions are the 'parent Act' (the primary legislation), and the babysitter's decisions are the delegated legislation. Now, the principle of ultra vires is like a strict rule that the babysitter must stay within the fridge. If they make a rule that goes beyond what the parent allowed, that rule is legally invalid. In law, there are two main types of ultra vires: procedural (when the body doesn't follow the required steps, like consulting the public before making a rule) and substantive (when the content of the rule itself is beyond the power given). For example, if a local council is given power to regulate traffic on public roads, but it tries to ban all political rallies on those roads, that could be ultra vires because it's not related to traffic control.
A deeper explanation
The principle works because of the hierarchy of laws. When Parliament passes an enabling Act, it creates a legal 'container' of authority. The delegated body can only act within that container; any action outside it is ultra vires, meaning it has no legal force. Why does this matter? Because it preserves the supremacy of Parliament—the elected body—and ensures that powers are not used arbitrarily. If a minister makes a rule that goes beyond the parent Act, a court can declare it void, protecting citizens from unauthorized government action. The mechanism is judicial review: an individual can challenge a rule, and the court interprets the parent Act to see if the rule falls within its scope. If not, the rule is struck down. This is not just a technicality; it's a fundamental check on delegated power. Without it, delegated legislation could become a backdoor for governments to make laws Parliament never intended, undermining democracy and the rule of law.