Today is Labor Day in the U.S. In practice, for most Americans, the primary significance of the day is as the unofficial last day of summer. I just went for a long swim in my outdoor pool, which closes today.

There are also political and union activities on the labor theme, marking the official reason for the holiday. Thus, President Obama gave a speech today in Detroit to a union gathering, previewing the themes of his long awaited address to a joint session of Congress on Thursday, addressing the concerns of organized labor.

This September date as a workers holiday was originally chosen by the Central Union of New York in 1882. It is strange that the rest of the world celebrates May 1st as the international day of labor, marking the Haymarket Affair of 1886, a scandalous labor conflict in Chicago. During the cold war, the U.S. even officially designated May 1st as “loyalty day.” The contrast with the practice of the Soviet Union and its allies was essential. The American Labor Day, though, has an equally serious origin. It became a national holiday after the violent events surrounding the Pullman Strike of 1894. American indeed has an important and rich labor history.

I think it is unfortunate that American labor’s celebration is out of sync with the rest of the world. We commemorate alone, which weakens the power of the ritual. Nonetheless, especially now, when labor issues are so central, as President Obama indicated in his speech, it is important to take notice. I recall some previous Deliberately Considered posts.

Rachel Sherman’s “Domestic Workers Gain Visibility, Legitimacy” noted an advance in labor legislation in the state of New York. She highlighted the achievements of the Domestic Workers Union to agitate and achieve some fundamental rights in the new legislation, concerning overtime, vacation leave and protections against sexual and racial harassment. As she also observed the place of American domestic workers in the global economy and the connection between class and gender, . . .

Read more: In Review: On Labor Day