An "arms race" of hours

I like to read articles in the paper about social science research. I came across one today in the Post which is interesting.

"If employees are unhappy and overworked, and employers are having to pay more for unhappy employees, why does the situation persist in a rational economic marketplace?

Some economists, sociologists and psychologists say the paradox arises because of the changing nature of the workplace. In a growing number of professions, especially those that involve thinking and social skills, managers and owners find it difficult to measure the day-to-day performance of employees."

Click here for the full article. Again, nothing groundbreaking...