Insurers are among 259 businesses that have earned the top rating in the seventh annual Corporate Equality index published by the Human Rights Campaign Foundation (HRC). The Index rates employers on a scale from 0 to 100 percent on their treatment of gay, lesbian, bisexual and transgender (GLBT) employees, customers and investors. Ratings are based on factors including nondiscrimination policies, diversity and inclusion, training, healthcare and domestic partner benefits. This year we tip our hat to Marsh & McLennan Cos, New York Life Insurance Co and The Progressive Corp for receiving the 100 percent rating for the first time. MetLife received the 100 percent rating for the sixth year in a row, while Chubb and Nationwide received it for the fifth consecutive year. The number of top-rated businesses reached an unprecedented 259 this year, an increase of one-third on last year. Collectively these businesses employ more than 9.3 million full-time U.S. workers.