Cathy Engelbert

A year and a half into her job as the chief of Deloitte, ­Engelbert has helped the company—the largest professional services firm in the U.S.—grow to $17.5 billion in revenues and over 78,000 employees in fiscal 2016, up from $16.1 billion and 70,000 the previous year. The longtime Deloitte executive has emerged as a paid-leave champion, instituting a major policy change that will allow all employees—men and women­—16 weeks of time off to care for family members. Two-thirds of Engelbert’s hires last year were women and minorities.