This reminds me of a lesson I learned working in sales for a big fortune 500 company.

You were given a quota to hit each week. One week I closed a big account and hit my quota for the week by Monday.

When it came time to review your weekly sales numbers, I got grilled by the sales manager for not closing double the quota, since I had closed the week's quota on Monday and had the rest of the week to continue selling.

I was taken aback by this and simply asked, where does that end then? If I closed a full year's quota in a single day, does that mean I should produce the same every day? With a capped commission why would I do that when another rep is producing a 10th of the amount but making the same pay?

It's not about hours worked, it's about production.