The History of May Day
https://www.marxists.org/subject/mayday/articles/tracht.html
The Fight for the Shorter Workday
The origin of May Day is indissolubly bound up with the struggle for the shorter workday a demand of major political significance for the working class. This struggle is manifest almost from the beginning of the factory system in the United States.
Although the demand for higher wages appears to be the most prevalent cause for the early strikes in this country, the question of shorter hours and the right to organize were always kept in the foreground when workers formulated their demands against the bosses and the government. As exploitation was becoming intensified and workers were feeling more and more the strain of inhumanly long working hours, the demand for an appreciable reduction of hours became more pronounced.
Already at the opening of the 19th century workers in the United States made known their grievances against working from "sunrise to sunset," the then prevailing workday. Fourteen, sixteen and even eighteen hours a day were not uncommon. During the conspiracy trial against the leaders of striking cordwainers in 1806, it was brought out that workers were employed as long as nineteen and twenty hours a day.
The twenties and thirties are replete with strikes for reduction of hours of work and definite demands for a 10-hour day were put forward in many industrial centers. The organization of what is considered as the first trade union in the world, the Mechanics' Union of Philadelphia, preceding by two years the one formed by workers in England, can be definitely ascribed to a strike of building trade workers in Philadelphia in 1827 for the 10-hour day. During the bakers' strike in New York in 1834 the Workingmen's Advocate reported that "journeymen employed in the loaf bread business have for years been suffering worse than Egyptian bondage. They have had to labor on an average of eighteen to twenty hours out of the twenty-four."
The demand in those localities for a 10-hour day soon grew into a movement, which, although impeded by the crisis of 1837, led the federal government under President Van Buren to decree the 10-hour day for all those employed on government work. The struggle for the universality of the 10-hour day, however, continued during the next decades. No sooner had this demand been secured in a number of industries than the workers began to raise the slogan for an 8-hour day. The feverish activity in organizing labor unions during the fifties gave this new demand an impetus which, however, was checked by the crisis of 1857. The demand was, however, won in a few well-organized trades before the crisis. That the movement for a shorter workday was not only peculiar to the United States, but was prevalent wherever workers were exploited under the rising capitalist system, can be seen from the fact that even in far away Australia the building trade workers raised the slogan "8 hours work, 8 hours recreation and 8 hours rest" and were successful in securing this demand in 1856.
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