[Excerpt] More than 60 percent of the net employment growth during the 1990s occurred among managers and professionals, occupations in which long workweeks are quite typical. Coincident with this rise in employment has been the perception that managers and professionals are working longer workweeks than in the past. However, weekly hours data for such occupations show that the average workweek has been about 42 hours during the entire decade and, in fact, has shown little variation since 1982.