Original: He was a member of the Bundestag from 1975 to 1992 and again since 1998; from 1995 to 1998 he was a member of the Landtag (state parliament) of North Rhine-Westphalia.
Simplified: 1998 he was a member of the Landtag (state parliament) of North Rhine-Westphalia. From 1992 to 1995 he was Secretary of Social affairs in the State of North Rhine-Westphalia.