Fifty years ago, the typical first-time mother in the U.S. took about four hours to give birth. These days, women labor about 6 1/2 hours. Carsten/Three Lions/Getty Images hide caption toggle caption Carsten/Three Lions/Getty Images Shots - Health News Babies Take Longer To Come Out Than They Did In Grandma's Day March 31, 2012 The typical first-time mother takes 6 1/2 hours to give birth these days. Her counterpart 50 years ago labored for barely four hours. That's a finding with big implications for current rates of cesarean sections.