Anne-Marie Slaughter's controversial cover story for The Atlantic this month acknowledges a simple point: There is a "family cost" to your career and a "career cost" to your family. Time is finite, even if our ambitions aren't.
This is a trade-offs millions of parents recognize every day. Today, even with women accounting for a nearly equal share of the labor force, it is still the case that working mothers spend much more time with their children than working fathers.
How much more? We can answer that question in graphs, thanks to the Bureau of Labor Statistics' monthly review of working parents from 2008.
(1) More kids means less full-time work -- but only for mom. More than 90% of married men aged 25-54 were employed full-time, with or without kids, BLS found. Meanwhile, for each additional kid, full-time employment for married women declined by about 10 percentage points. Only 24% of mothers with four or more kids works full-time, compared with more than 80% of married fathers.
(2) Older kids means more full-time work -- but only for mom. The next graph looks at mothers, only. It groups employment by the age of the youngest kid. When the youngest child is a teenager, mothers are about 75% more likely to be employed than when the youngest child is under 5 years old.