Wikipedia has this to say on Labour Day:
Labour Day (Labor Day in the United States and Día del Trabajo in Spain) is an annual holiday to celebrate the achievements of workers. Labor Day has its origins in the labor union movement, specifically the eight-hour day movement, which advocated eight hours for work, eight hours for recreation, and eight hours for rest.
Heh. Wouldn't it be nice!
Anyway, here are the 3 images on Labour Day which I find 'interesting'.