[3] She co-founded the Kababayan Multicultural Centre,[4] a settlement agency advocating for the rights of Filipino people in Toronto, where she served as a board member[1] together with fellow anti-Marcos activists Ruben Cusipag, Tessie Jew, Voltaire de Leon, and Helen Mascardo in 1977.
She served on the board of INTERCEDE, an organization that worked for the welfare of foreign domestic workers, advocating for their right to remain in Canada at the end of their contracts.
She was elected the NOIVMWC Regional Vice President representing Ontario through which she organized with the Canadian Ethnocultural Council Women's Issues Committee.
In 1992, Hernandez helped organize the first Filipino Canadian National Conference on Wife Abuse and Violence Against Women held in Montreal.
[1] In 1987, the City of Toronto gave her its Constance E. Hamilton award, which recognizes efforts to secure fair treatment for women.