Why we trade time instead of outcomes

In my employment contract there is no mention of productivity or an expected outcome. The one thing that is stated: I give time, I receive money, which means I trade time for money. Wouldn't it make more sense to demand something that is more valuable to my company than time? Time alone does not help them in any way. They want results, not time. I could spend all the time in the world sitting at my desk and would not produce anything useful for them. Time is valuable to me, but that does not make the time I devote to my job valuable to my company. If they want outcomes, why don't they call for them? The answer is easy. Time is the easiest thing to measure. Productivity is hard to measure, because to measure it accurately, you need well-defined goals. And expected outcomes (goals) can change from week to week in many workplaces. Expected outcomes can be defined at the beginning with the information present at that time, but they won't stay relevant for long. They have to be reevaluated…