Labour Day falls on the first Monday of March in Western Australia and on the second Monday of March in Victoria and Tasmania. New South Wales, Queensland, South Australia, the Northern Territory and the ACT do not hold a Labour Day public holiday in March at all, so the long weekend applies only in the three states that observe it on these dates.
Thursday sits one working day ahead of the weekend, making it the point in the week where plans for Friday, Saturday and Sunday commonly get finalised. 7 March 2030 falls on this day of the week, the second-to-last working day before the standard Monday-to-Friday week comes to a close and the weekend takes over.
A public holiday that falls on a Monday or a Friday produces a three-day weekend without using any annual leave, which is why long-weekend planning around 7 March 2030 depends on which day of the week the nearest public holiday falls on. A midweek holiday delivers no such automatic extension, though many workers bridge it with a single day of leave.