[3] The group became known for taking more proactive media and legal roles than prior organizations in Japan.

[4] In February 1990, members of OCCUR stayed overnight at Fuchu Youth House for a study session.

In 1991, OCCUR filed a lawsuit against the Tokyo Metropolitan Government over discriminatory treatment, and the legal battle subsequently became a major focus for the group.

[5][6] The judgement has since been regarded as a major legal turning point on the issue of discrimination against sexual minorities in Japan.

[1] In 2018, the group's official name was changed from "Japan Association for the Lesbian & Gay Movement" to "OCCUR", which had already been in use since the organization was formed.