Labour Day (Labor Day in the USA) is an annual holiday to celebrate the achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest. For many countries, Labour Day is synonymous with, or linked with, International Workers' Day, which occurs on 1 May. For other countries, Labour Day is celebrated on a different date, (often the last weekend of August in the US, often called Labour Day weekend) often one with special significance for the labour movement in that country. In Canada, Labour Day is the first Monday of September and considered the official end of the summer holiday for most of the country, as public school and university students return to school that week or the following week. (Parliament normally also begins its new session after the holiday, except in cases of prorogation.)
International Workers' Day
For many countries, "Labour Day" is synonymous with, or linked with, International Workers' Day, which occurs on 1 May. Some countries vary the actual date of their celebrations so that the holiday occurs on a Monday close to 1 May. The remainder of this article addresses those countries for whom Labour Day is not linked to International Workers' Day.
Read more: http://en.wikipedia.org/wiki/Labour_Day