Labour Day in Australia does not have a single national date. It is observed on different dates in different states and territories:

- **New South Wales, South Australia, and the Australian Capital Territory**: Second Monday in October (2026: 12 October)
- **Victoria and Tasmania**: Second Monday in March (2026: 9 March)
- **Queensland**: First Monday in May (2026: 4 May)
- **Western Australia**: First Monday in March (2026: 2 March)
- **Northern Territory**: First Monday in May (2026: 4 May)

There is no single national Labour Day date in Australia. The holiday is set differently in different parts of the country, so a single confident national date would be wrong. The specific date depends entirely on where the employee works. An HR or payroll officer must determine the correct date based on the employee's state or territory of employment, not assume a national standard.