Women employees work harder and longer than men do, according to a new study by independent research consultancy the Ponemon Institute.

Among the subjects that took part in trials across the U.S., females consistently worked for a longer period of time during a ten-minute experiment than their male colleagues.

Researchers also discovered that men are even less productive when women are around. …

When the researcher and subject were both male, the average time worked was 3.6 minutes. When they were both female, productivity rose to four minutes.

But with a female researcher and a male subject, the time worked dropped to just 2.8 minutes.