19世纪80年代，随着资本主义进入垄断阶段，美国无产阶级的队伍迅速壮大，出现了波澜壮阔的工人运动。当时美国资产阶级为了进行资本积累，对工人阶级进行残酷的剥削压榨，他们用各种手段迫使工人每天从事长达12—16小时的劳动。美国广大工人逐渐认识到，为了保障自己的权利，必须起来进行斗争。

In nineteenth Century 80's, with the stage of monopoly capitalism into the rapidly growing ranks of the proletariat, in the magnificent labor movement. The bourgeoisie for capital accumulation, the cruel exploitation of the working class squeeze, they used various means to force the workers engaged in a day long 12 - 16 hours of labor. The majority of U.S. workers gradually realized that in order to protect their rights, we must fight together.

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从1884年开始，美国先进的工人组织通过决议，要为实现“每天工作八小时”而战斗，并且决定展开广泛的斗争，争取在1886年5月1日实行八小时工作制。八小时工作制的口号提出后，立即得到美国全国工人阶级的热烈支持和响应，许多城市数以千计的工人投入了这场斗争。罢工工人遭到美国当局的血腥镇压，很多工人被杀害和逮捕。

From the beginning of 1884, the United States advanced worker organization by resolution, to fight for the realization of "eight hours of work a day", and decided to start a wide range of struggle, for in May 1, 1886 the implementation of eight hour working system. Eight hours after USA slogan, get the enthusiastic support of the working class and the immediate response, many city thousands of workers in the struggle. The workers on strike bloodily American authorities, many workers have been killed and arrested.

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1886年5月1日，美国芝加哥等城市的35万工人举行大罢工和游行示威，要求实行8小时工作制、改善劳动条件。这场斗争震撼了整个美国。工人阶级团结战斗的强大力量，迫使资本家接受了工人的要求。美国工人的这次大罢工取得了胜利。

In May 1, 1886, Chicago city America 350000 workers held a general strike and demonstrations, demanding the 8 hour working system, improve the working conditions. This struggle shook the whole American. Working class solidarity powerful fighting force, forcing workers to accept capitalists requirements. The strike of workers to the United States to victory.

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1889年7月，由恩格斯领导的第二国际在巴黎举行代表大会。为了纪念美国工人的这次“五一”大罢工，显示“全世界无产者，联合起来!”的伟大力量，推进各国工人争取八小时工作制的斗争，会议通过决议，决定1890年5月1日国际劳动者举行游行，并把5月1日这一天定为国际劳动节。5月1日，国际劳动节，它是全世界工人阶级斗争的历史纪念，每个国家都很重视它，尤其是美国、加拿大、南非。

In 1889 July, led by Engels, the second International Congress held in Paris. In order to commemorate the "American workers five one" strike, "proletarians of the world, unite!" The great strength, and promote national workers for the eight hour battle, meeting passed a resolution, decided in May 1, 1890 to the international workers marched in May 1st, and to this day as the international labor day. In May 1st, the international labor day, it is the struggle of working people throughout the world to commemorate the history, each country attaches great importance to it, especially in the United States, Canada, South africa.