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Marissa Mayer speaks onstage at the FORTUNE Most Powerful Women Dinner New York City at Hudson Room at the Time Warner Center on May 24, 2011 in New York City. - 

Marissa Mayer, the new CEO of Yahoo, pretty powerful woman. It's also just come out that she is pregnant and due in October, just a few months after taking over the ailing tech company. It'll be her first child, and she says she plans to work through her maternity leave. All three weeks of it.

Here to talk to us in today's Mid-day extra about what women in power are up against when it comes to maternity leave is Jennifer Owens, editorial director for Working Mother Media.

Follow Jeremy Hobson at @jeremyhobson