Labor Day is a United States federal holiday observed on the first Monday in September (September 3 in 2012) that celebrates the economic and social contributions of workers.

Recent research indicates that, in 1882, Matthew Maguire, a machinist, first proposed the holiday while serving as secretary of the CLU (Central Labor Union) of New York.^[1] Others argue that it was first proposed by Peter J. McGuire of the American Federation of Labor in May 1882,^[2] after witnessing the annual labor festival held in Toronto, Canada.^[3]

Victory Day on September 7 is a national holiday in Mozambique to commemorate the signing of the agreement to end the Mozambican War of Independence. The agreement was signed between Portugal and Mozambique in 1974, with independence granted in 1975.