Labour Day falls on the first Monday of October in New South Wales, South Australia and the ACT, the only three jurisdictions observing the holiday on this date. 3 October 2027 carries this public holiday in those three states, with every other state and territory working through an ordinary day.
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 3 October 2027 falls on this day of the week, at the close of the weekend, immediately before the working week resumes.
The week number shown for 3 October 2027 counts full weeks from the start of 2027, a figure used in payroll cycles, rostering and any planning done in weekly or fortnightly blocks rather than by calendar month. Businesses running fortnightly pay runs rely on this figure to track which of the two alternating pay weeks a date falls in.