Green is known as an activist for the legal protection, medical access, safety, civil rights, and dignity of
transgender and
transsexual people. "Green has been at the forefront of writing transgender health policy," writes
NewNowNext, "His writing has been used to lay the groundwork for transgender anti-discrimination practices and insurance coverage across the nation." He began presenting on the fair treatment of transgender workers in 1989. Green continued his advocacy work and in the 1990s became "known both in the U.S. and abroad for his transgender activism." Green took over writing the
FTM Newsletter after
Lou Sullivan's death in 1991. The newsletter addressed the "complex legal, medical, and general social needs" of trans men. He was the leader of
FTM International from March 1991 to August 1999. Green grew a San Francisco support group for transgender men into a global organization and in 1994 wrote a report on the discrimination against transgender people for the San Francisco Human Rights Commission. Green has served on the boards of the Transgender Law and Policy Institute and the Equality Project, was an advisory board member of the
National Center for Transgender Equality, and chaired the board of
Gender Education and Advocacy. He served as president of the
World Professional Association for Transgender Health from 2014 to 2016. Green helped establish the
Human Rights Campaign's
Corporate Equality Index in 2002 and was a member of the organization's Business Council until late 2007, when he resigned over the organization's stance on transgender inclusion in the
Employment Non-Discrimination Act. In 2007, Green founded a consulting group which works with businesses, educators, and the government on transgender training and policy work Building on his experience as an activist, Green earned his Ph.D. in Equalities Law from
Manchester Metropolitan University in England in 2011. ==
Becoming a Visible Man==