Suicide was a theme that occupied him for many years; in a Tages-Anzeiger article on 18 August 1973, he asked "Ist Leben freiwillig?" and discussed the relation of life and death and the right to end life. From 1998 to 2002 Baumann worked as a prescribing doctor for "Exit (Switzerland)" and sat on their ethics committee. This organisation assists the terminally ill to take lethal doses of a barbiturate (commonly Pentobarbital sodium) which can be legally prescribed by a doctor. An organisation with similar approach, but one which extends its services to non-Swiss, is the Swiss Dignitas.
