Labor Day

Happy Labor Day, everyone! Hope you've enjoyed sleeping in, and will continue to relax and have a nice, fun day.
Labor Day is a long weekend for most people, but it's even longer for me. Other schools would go back tomorrow, but my district has an in-service day, so I get one more day to have fun and rock out! I plan on working on this story I've just started, and maybe watching a couple movies. And, of course, sleeping in... I may just do more of that after this post. Hehe :)
What is the history of Labor Day, anyway? I know it has to do with labor unions or something, but I've never heard all the details. Is my brother right, and it was made a holiday by FDR after WWII? I really don't know. I'm probably with the majority on that, but I still feel like I should know.
Well, I really can't think of anything else... happy Labor Day!