Labor Day affair, which occurred in Chicago on May 4, 1886.) Lastly, several countries have chosen neither date for their Labour Day. Beginning in the late 19th century, as the trade union and labor movements grew, different groups of trade unionists chose a variety of days on which to celebrate labor. In the United States, a September holiday called Labor Day was first proposed in the early 1880s. Alternate stories of the event's origination exist. According to one early history of Labor Day, the event originated in connection with a General Assembly of the Knights of Labor convened in New York City
Labor unions in the United States workers voted for union representation. Most of the elections (15,517) were triggered by employee petitions for representation, of which unions won 9,933. Less common were elections caused by employee petitions for decertification (2792, of which unions won 1070), and employer-filed petitions for either representation or decertification (268, of which unions won 85). In the US, labor education programs such as the Harvard Trade Union Program created in 1942 by Harvard University professor John Thomas Dunlop sought to educate union members to deal with important contemporary workplace and labor law issues of the day. The Harvard Trade Union Program is currently