A shorter workday works particularly well for knowledge workers—people in creative or professional jobs—who can work productively for about six hours a day,

A shorter workday works particularly well for knowledge workers—people in creative or professional jobs—who can work productively for about six hours a day, compared to the eight hours manual laborers can churn out, according to Salon. Since when do we care about the well-being of manual workers - or professionals? The focus on management has been to (fail to ) extract as much labor as they can from their workers and paying them the least. This can be formalized through various management mumbo jumbo. How do we re-educate managers to "risk" losing productivity by trying these alternative means?