Akademie der Künste, Berlin: Member, 1996 - present

Alley Theatre, Houston, Texas: Associate Artist, 1992 - present

American Academy in Berlin: Fellow

American Academy of Arts and Letters: American Honorary Member

American Repertory Theatre, Cambridge, MA: Honorary Board Member

Byrd Hoffman Watermill Foundation: Artistic Director, 1970 -present

The Dramatists Guild: Member

Institute of Contemporary Art, Boston: Board of Overseers

PEN American Center: Member

Société des Auteurs et Compositeurs Dramatiques, France: Member

Society of Stage Directors and Choreographers, New York City: Member

United Scenic Artists, Local 829, New York City: Member