This holiday commemorates the working protests in Chicago which began on May 1, 1986. On that very day, hundreds of thousands of the biggest working industrial centers in the USA demanded the implementation of the 8 hours working day.
That is why this day is believed to be The Day of the national fight for the workers’ rights.
For the first time, May 1 was celebrated in 1980 in many countries of the world, in particular in Lviv. The mass demonstrations and protests took place in Vienna, Prague, Krakow, Budapest, Paris, and Milan.
In 2017, the Verkhovna Rada of Ukraine introduced amendments to Article 73 of the Labor Code of Ukraine, according to which the Day of International Solidarity of Workers was renamed into the Labor Day.