Labour Day falls on the first Monday of May in Queensland and the Northern Territory, the only two jurisdictions that mark the holiday on this date. 28 May 2028 falls inside May in every other state and territory without any public holiday attached to it at all, running as an entirely ordinary working month in New South Wales, Victoria, South Australia, Western Australia, Tasmania and the ACT.
A public holiday that falls on a Sunday sits inside the weekend rather than beside it, and whether a substitute day off applies to the following Monday depends on the specific holiday and the state. Sunday 28 May 2028 falls on this day of the week, at the close of the weekend, immediately before the working week resumes.
The quarter containing 28 May 2028 is based on the calendar year running January to December, a separate system from the Australian financial year, which runs from 1 July to 30 June and splits into its own four quarters. Businesses often track both systems side by side, one for tax filings and one for calendar-year planning.