Just researching legal oddities and came across this one:
Dumb Laws in Australia
Only licensed electricians may change a light bulb.
Some sources attribute it only to the state of Victoria.
Does anyone know if it's true or not?
Victoria is the only state where to my understanding the usual exceptions to requiring licensed electrical contractors are not directly listed in the relevant Act, so my answer focuses on the situation there.
Electrical work in Victoria is regulated by Energy Safe Victoria.
Their website lists the legislation they administer.
One of the documents they have there is this one, pursuant to the 1998 Act, which in part 3 (page 9 of the pdf) lists some exceptions to the broad rule that only licensed electrical contractors can carry out electrical work. In particular, subsection (c) exempts work:
(c) involving the insertion or removal of –
(i) a plug into or from a socket designed for such a plug; or
(ii) a light globe, fluorescent tube or starter for a fluorescent tube, where access to live parts is not required; or
(iii) a fuse element.
So putting a plug in a socket, (and removing it), changing a light bulb and changing a fuse are all explicitly exempted from the rule. That is, those things are allowed to be carried out in Victoria without a licensed electrician.
It's not true in Queensland, at least.
The Electrical Safety Act 2002 specifies that "electrical work" may only be done by licensed electricians, but Section 18-2-c specifically excepts changing light bulbs from electrical work.
Electrical work does not include the following .... replacing electrical equipment or a component of electrical equipment if that task can be safely performed by a person who does not have expertise in carrying out electrical work;
Examples for paragraph (c)—
• replacing a fuse
• replacing a light bulb in a light fitting
Victoria's Electrical Safety Act does not have a list of exceptions, so one might include the changing of a lightbulb as "installation of an electrical device" which does require licensing.