 Earlier in her career, Breslin taught graduate courses at the University of San Francisco and was an editor and researcher for Disability Rights and the Independent Living Project stemming in Berkeley, California.Besides work in the US, Breslin has provided consultations for disability rights leaders in Russia and Japan.In 1978, Breslin began running trainings about Section 504 of the Rehabilitation Act, a law which prohibits discrimination against people with disabilities in federally funded programs.