 Hayter was the General Secretary of the Fabian Society between 1976 and 1982 and Chief Executive of the European Parliamentary Labour Party during 1990 to 1996.She sat on Labour's National Executive Committee from 1998 to 2010 and chaired it in 2007–08.The Labour History Archive and Study Centre at the People's History Museum in Manchester holds the personal papers of Dianne Hayter in their collection, spanning from the late 1970s to 2010.