That's a commercial.
Entirely staged.
But cute.
Well, here's a non-staged video construction showing actual idiots.
http://www.youtube.com/watch?v=0wmcD3aM8X4
Reminds me of the morons three houses down the street who dug a (roughly) 15 foot deep trench along the foundations of an old house without any shoring! Kept working down there for days, waterproofing and insulating the foundations.
Good way to prevent accidents on the job....
Wear Depends...