May 1 of each year (5.1)
The origin of Labor Day
The slogan of the eight-hour work system was presented at the first International Geneva conference in 1866. May 1, 1886, the United States at the center of Chicago, the United States held about 350,000 people to participate in large-scale strikes and demonstrations, demonstrators called for improved conditions, the implementation of eight-hour work system. May 3, the Chicago government to suppress the police, shot and killed two people, the expansion of the May 4 strike workers in the hay Market Square to protest, because unidentified persons to the police to throw bombs, the final police shot, a total of 4 workers, 7 policemen died, known as the "Hay Market Riots" (Haymarket Riot) or "Hay Market Massacre" (Haymarket massacre). In a subsequent sentence, 8 anarchists were indicted for murder, 4 anarchists were hanged and 1 were killed in prison.
Protests were held around the world to commemorate the event and to protest subsequent sentencing. These activities became the predecessor of the "Labor Day". The Second International Congress, held in Paris in July 1889, decided to use May 1 as an "International Day of demonstrations". The eight-hour work system was established as a national legislation in the United States until 1935, when President Roosevelt was in power.
China
September 18, 1999, the State Council issued the State Council's decision to amend the National Festival and anniversary holiday, the first revision of the December 23, 1949 China AC issued the "National Holidays and Anniversary Holiday", will be the annual Chinese New Year, "51" and the National Day statutory holidays plus lieu, The National vacation 7 days, formed 3 "Golden Week". December 14, 2007, China's second State Council revised the "National Festival and Anniversary Holiday", will be the beginning of the holiday from the first Lunar New Year's Eve adjustment for the first day of the year, "51" from 7 days to 3 days, reduce 4 days, qingming, dragon-Boat festival, the Mid-Autumn Festival added for statutory holidays, 51 Golden Week will also become history. Since 2008, the 51 Golden Week has become a 513-day long holiday.
China organizes large workers ' get-together at Wuyi Labor Day every year.
In addition, in Hong Kong and Macao, since the reunification, the 51 Labour Day has been classified as a national holiday in the HKSAR, and the day of the holiday. However, after the reunification of Macao, Macao will have various associations and interest groups to take the streets on May 1 to petition the Macau SAR Government, that is, the so-called "Macau 51 parade".