Designing Inspirations for Labor Day Posters 2013. After the 1920’s, the Labour Day parade began to decline and the day became, in many places, a welcome holiday. Labour Day falls in spring and, if the weather is pleasant, it becomes a day of family outings and impromptu sporting events. But in October, the weather is not predictable. For example, in October 2012, snow fell on Canterbury and a tornado severely damaged buildings in the west coast towns of Hector and Ngakawau.