LONDON -- Housework and child care are condemning millions of career women to much longer working days than men, a major report claims.

Women who go out to work still do the bulk of household chores, according to the study by Cambridge University of more than 30,000 people….

So while men may spend longer at the office, it is women who work more each week if domestic and paid employment are added together.

Thursday's European Union-funded report, which examined working practices across member states, says that the average man in full-time employment works about 55 hours a week.

By contrast, the average working week for a woman in full-time employment in the EU is 68 hours. But even women who work part-time put in longer hours overall than men in full-time work because they do so many household chores.

The domestic workload also prevents millions of women from working the long office hours typically required to break into the top management jobs, the report says.

The lifestyle divide must change if women are to have equal opportunities in the workplace, the report says.