In the legal profession, diversity, equity and inclusion (DEI) have become crucial focal points for organizations striving to create a more equitable and representative environment. One prominent initiative attracting the participation of more and more firms is the Mansfield Rule Certification, created by Diversity Lab. 

What is the Mansfield certification?

Named after Arabella Mansfield, the first woman admitted to the practice of law in the United States in 1869, this certification program aims to promote diversity and inclusion by ensuring equal opportunities for underrepresented groups in leadership positions within law firms and legal departments. More specifically, it measures whether law firms have affirmatively considered at least 30% women, lawyers of color, LGBTQ+ lawyers, and lawyers with disabilities for leadership and governance roles, equity partner promotions, formal client pitch opportunities and senior lateral positions. 

The first cohort in 2017 involved 35 American law firms. As of this year, there are now more than 300 Mansfield-certified firms in Canada, the United Kingdom and the United States, as well as more than 80 legal departments.