 She was a member of the Social Democratic Federation of Australasia, Australian Labour Party, Labor Women's Central Organizing Committee and of Womanhood Suffrage League of New South Wales.McNamara died of pneumonia at North Sydney on 1 August 1931.A bronze bas relief of Bertha McNamara, by Lyndon Dadswell, is located in Foyer of the Trades Hall (Goulburn Street, Sydney)