From the summary:
Women in the Workplace 2016 is a comprehensive study of the state of women in corporate America. The study is part of a long-term partnership between LeanIn.Org and McKinsey & Company to give companies the information they need to promote female leadership and foster gender equality in the workplace.
132 companies employing more than 4.6 million people shared their pipeline data and completed a survey of HR practices. In addition, 34,000 employees completed a survey designed to uncover their attitudes on gender, job satisfaction, ambition, and work-life issues.
This year’s findings build on our Women in the Workplace 2015 report, as well as similar research conducted by McKinsey & Company in 2012.