There's no quota, but enumerator hours-per-week are based on estimates of work and there's no particular effort to claw back unused time if the actual work is done early, so intentional foot-dragging just takes up de facto paid time the enumerator could spend on other things like school or job-hunting.
Or maybe they would prefer to spend their time finding people who are actually hard to enunerate, rather than wasting on someone who is just looking to consume their time.
