I know not all societies are as focused on the end result as we are. I think for Americans, the goal is more important than the process in most cases.
I ran into this problem a few times with contractors who expected to get paid for doing work, though they did not meet any of the objectives (I always clearly spell out objectives in the offer). Usually we agree on a compromise, but even that doesn't always sit well with them.
What has been your biggest frustration with foreign workers?
If you've worked for Americans, what has been your biggest frustration with us?