As a lawyer, Berthoud sat at the board of directors of the Swiss insurer Altstadt Compagnie d'Assurances SA between 1959 and 1986.
In 1958 she was associate at the Swiss Association for Women having graduated from Universities (l'Association Suisse des Femmes Diplômées des Universités) and president of the Swiss Exposition for Working Women (SAFFA).
In 1952 she was committee member of the Union of Swiss Women's Societies (today it is known as alliance F) and became its president in 1955 until 1959.
She represented the union to the Commercial Policy Federal Commission from 1957 until 1979 and to the council of war.
Between 1968 and 1980 she was vice-president of the Forum Helveticum, a platform for discussion of current issues in Swiss public life.