Comment by croon

To be fair, you're either paying for hours or for output, because I assure you you are not paying staff accurately for their output. You can of course sack someone who outputs notoriously little, but if you get output exceeding your average "8 hours of output", you shouldn't care if someone made it in 1 hour or 16, or at least you wouldn't be able to tell.

I'm using "output" as quoted in context, it's such a nebulous measure unless you're specifically buying a product.