Williams-Sonoma CEO Laura Alber on working her way to the top and bringing others with her

Women make up nearly 50 percent of the U.S. labor force, but they account for just 25 percent of executive and senior level positions at S&P 500 companies, according to the Center for American Progress. That percentage is even smaller when you look at board seats and CEO positions, of which women hold just 20 percent and six percent, respectively.

One leader who is encouraging companies to not only hire women, but promote them is Williams-Sonoma CEO Laura Alber. Having worked her way up the company's ranks from an entry-level position to CEO, Alber says she's aware of her influence as one of the few female leaders in her industry.