Calendar September 2024 Labor Day. In america, labor day is observed on the first monday in september, marking the unofficial end of summer with various events and festivities. Labor day in 2024 is on monday, the 2nd of september (2/9/2024).

Labor day (monday, september 2, 2024) and the first day of autumn (sunday, september. It started on tuesday, september 5, 1882.