Chairman, CEO and President Mark Bertolini ties 10 percent of his direct reports’ bonuses to diversity and personally signs off on reaching those goals. He also signs off on goals and achievements for supplier diversity and sits on the board of the National Gay & Lesbian Chamber of Commerce.

Seventy-five percent of managers participate in the company’s mentoring programs. Its programs include an enterprise-wide mentoring program (open to all employees), an Emerging Leaders program, mentoring circles, lunch-and-learn mentoring and department-specific mentoring programs. All are cross-cultural. Mentoring relationships are formally evaluated, and the benefits of joining are communicated internally.

Aetna has been considered one of the top companies for resource groups, which can be directly attributed to the efforts of Chief Diversity Officer Raymond Arroyo. It has 100 resource groups company-wide that are available to all employees, including hourly/shift workers. Twenty-nine percent of all employees participate in the groups, and the company regularly communicates the benefits of the resource groups. Senior executives are members of each group, and the CEO meets with groups monthly. The groups are used for marketing, recruiting and talent development. The groups also participate in and initiate diversity-training and awareness activities.

The company allocated 43.2 percent of its philanthropic spend to multicultural nonprofits.

U.S. Headquarters: Hartford, Conn.

U.S. Employees: 34,888

Last Year’s DiversityInc Top 50 Ranking: No. 19