Now I have four days?

Isn't funny that even though we only have four days to work due to Labor day the week still goes on? I mean what would happen if every week was a three day weekend? Or for that matter a four or five day weekend? Would it cause efficiency to go down or productivity to go up? I read about Best Buy's Corp. Office removing restrictions to when and where people work to getting the job down in a specific amount of time and there productivity going up 20%. So the real question is do we work from 9 to 5 or 8 to 4 or 7 to 7 to be productive or to produce an image of being productive? The older I get the more I see it as the later, especially in an office environment. We have to be open from 8 to 5 because people expect us too?