Chung found that men and women in full-time jobs with flexible schedules worked about the same amount of overtime hours. The same went for mothers and fathers. The men, however, saw an earnings increase beyond overtime pay after switching from a concrete schedule to flexible hours. They banked an average of 1,000 more euros (about $1,125) per year. The women enjoyed no such gains.
Contrary to what you might expect, those with more control over their work schedule work more than those with less control. In fact, people have a tendency to work more overtime hours once they are allowed to work flexibly, compared to when they were not.
Article about the biggest collection of time-use diaries in the world, kept by the Centre for Time Use Research at the University of Oxford, UK. The centre's holdings have been gathered from nearly 30 countries, span more than 50 years and cover some 850,000 person-days in total. They offer the most detailed portrait ever created of when people work, sleep, play and socialize — and of how those patterns have changed over time.