Who is Labor anyway?

So today is/was labor day. I'm still not sure why it exists, or where
it comes from, but I got the day off and the family left the night
before for a day at the beach.

I spent my day watching great horror movies, doing laundry, and
playing with my new iZotope iDrum beat sequencing program, all while
sporting my new and super-rad shirt, as shown above.