As president of the foundation, despite undergoing two kidney transplants, Larraín became one of the main campaigners to achieve the approval of a civil union law in notoriously conservative Chile. Since October 22, 2015 same-sex couples and households headed by same-sex couples have the same legal protections available to opposite-sex married couples within a civil union, except for adoption rights and the title of marriage. Fundación Iguales also promotes dialogue and cooperation with partner groups made up of women and indigenous peoples.