Bob Herbert joined The New York Times as an Op-Ed columnist in 1993. His twice a week column comments on politics, urban affairs and social trends.

Prior to joining The Times, Mr. Herbert was a national correspondent for NBC from 1991 to 1993, reporting regularly on “The Today Show” and “NBC Nightly News.” He had worked as a reporter and editor at The Daily News from 1976 until 1985, when he became a columnist and member of its editorial board.

In 1990, Mr. Herbert was a founding panelist of “Sunday Edition,” a weekly discussion program on WCBS-TV in New York, and the host of Hotline, a weekly issues program on New York public television.