Antonio Ramirez worked in the 1960s on the education staffs of the Amalgamated Clothing Workers of America and the International Ladies Garment Workers Union. He retired in 1994 after serving twenty-five years as an editor of the New York Teacher, the publication of the New York State United Teachers, American Federation of Teachers, AFL-CIO. He is a member of the boards of directors of the New York State Labor History Association and the Association for Union Democracy.