After the Second World War, Morath worked as a translator and journalist. In 1948, she was hired by Warren Trabant. She worked for "Heute". Morath met photographer Ernst Haas in post-war Vienna. She brought his work to Trabant's attention. Working together for "Heute", Morath wrote articles to go along with Haas' pictures. In 1949, Morath and Haas were invited by Robert Capa to join the newly founded Magnum Photos in Paris.