Do you have any data/studies besides an anecdote to show that this kind of observation does not hold in real life? All the data I've seen show that women do work part-time more often, work fewer hours (for example, for doctors: http://www.medscape.com/features/slideshow/compensation/2016...), take more vacations (http://www.usatoday.com/story/travel/2013/04/25/vacation-tra...), and take more sick days (http://www.hrzone.com/lead/culture/why-do-women-take-more-si...).