Labor Day in Australia is a public holiday on dates which vary between states and territories. It is the first Monday in October in the Australian Capital Territory, New South Wales and South Australia. In Victoria and Tasmania, it is the second Monday in March (though the latter calls it Eight Hours Day). In Western Australia, Labor Day is the first Monday in March. In Queensland and the Northern Territory, Labor Day occurs on the first Monday in May (though the latter calls it May Day). It is on the fourth Monday of March in the territory of Christmas Island. The first march for an eight-hour day by the labor movement occurred in Melbourne on 21 April 1856.