that's why when you have a worker doing a job for you, you have someone watch them until they get done.
when insupervised people tend to be lazy and do shoddy work.
at least when someone is watching (doesn't have to be someone who knows what's going on either) they become more aware that there will be a witness to point out where they skipped corners.
especially people who get paid by the job and not be the hour!

__________________
"I'll make you an offer you can't refuse"