Differences: Acts, Bills and subsidiary legislation

Acts (also called “statutes”): are laws made by Parliament (Legislative Assembly and Legislative Council) and the sovereign, who is represented by the Governor in Western Australia.

Bills: are proposed Acts. A member of Parliament introduces a Bill into the Legislative Assembly or Legislative Council. If both Houses pass the Bill, it is assented to (signed) by the Governor (on behalf of the sovereign), and becomes an Act. Commencement provisions are contained in the Act so even though it has been assented to by the Governor it may not come into force until proclaimed or on a specified date.

Subsidiary legislation (regulations, rules, codes, by-laws etc): generally are laws made under powers conferred by an Act. They expand on or supplement the provisions of the Act detailing the correct way the provisions of the Act are to be implemented. These pieces of legislation must be published in the Government Gazette to become law and in most cases need to be signed by the Governor in Executive Council.

Government of Western Australia
Department of the Premier and Cabinet. State Law Publisher.
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