The studies found that the mistake rate in two intensive-care areas decreased when interns worked fewer hours.

VOA: special.2010.07.13

Jeff and Andy worked twelve hours a day answering them.

VOA: special.2010.04.24

Benny worked at the Barrison Theater sometimes during school hours.

VOA: special.2009.10.11

Black women worked very long hours for little wages.

VOA: special.2010.03.28

At first,she worked only a few hours each week.

VOA: special.2010.04.25

He worked for several hours.

VOA: special.2009.11.12

(Voice) Dr.Robert Satcher and Randolph Bresnik are among the crew who worked for hours to install an enormous oxygen tank for the space station.

VOA: standard.2009.11.30