For most small businesses, the Privacy Act 1988 is the first privacy law to check. The Victorian Privacy and Data Protection Act is different. It is aimed mainly at Victorian public-sector organisations, but it can become very practical for private businesses that work with them.
If you provide software, support, hosting, consulting, records management, marketing, recruitment, call-centre, health, education or community services to a Victorian public-sector customer, the contract may require you to follow privacy and protective data security controls that come from this Act.