Though Dell appears to be doing well in productivity, many workers may not have noticed.

The affair began when some school teachers and social workers noticed "strange sexual behavior" from four children in a local school.

On the streets of Manhattan, workers grabbing a morning wake-me-upper from the corner vendor probably won't yet notice a change in prices.

The workers noticed broken ceramic sherds in the plained soil.

Postal workers notice more names on the different pieces of mail being delivered to each house.

On November 24, workers noticed that the bridge was about to sink, and started pumping out some of the pontoons.

The workers in the house had noticed it.

Ms. Carzan, the social worker noticed, had no help in caring for the child.

The workers who attached the armrests may not have noticed the odor because of the speed of the production line.

Even more experienced and dedicated workers must notice that "working hard to get ahead" does not pay anymore.