[em-bee]

employees are billed by the hour. that's how employment is defined in most countries. it's a payment for about 40 hours of work per week.

one of the key points of employment is that i get s reliable salary regardless of my performance. sure, if my performance is continuously very bad then my employer may want to make an adjustment (or let me go) and likewise if my performance is good i may expect a raise.

in general that stability of income is more important than the ability to go home earlier. because the latter means that i have to work more if things don't go well because deliverables are often hard to define. in IT at least. what do you count? lines of code? number of issues closed?

one week i may close a dozen issues, the next week a single task may have stumped me, requiring me to do days of research.

deliverables reslly only work on a large scale: "finish this project" or for a sysadmin: "keep the servers running". my customer or employer doesn't care how many hours i spend on that. if there are no problems then i am free, or i may get a bonus for closing a project early.