Fellow: New York State Bar Association (chair committee courts of appellate jurisdiction 1981-1985). Member: American Bar Association, AIDA Reinsurance & Insurance Arbitration Society, American Academy Appellate Lawyers, Federation Insurance & Corporation Counsel, American Law Institute (life), Association Bar City of New York (member special committee on tort litigation 1984-1987), Pi Gamma Mu.
Judicial clerk to honorary Charles W. Froessel New York State Court Appeals, 1960-1962. Associate/partner Sabin, Bermant & Blau (formerly Goldman, Evans & Goldman), 1963—1970. Founding partner Siff & Newman (formerly Siff, Newman, Rosen & Parker), 1971—1987.
Partner Bower & Gardner, 1971—1991. Founding member, president Newman & Company, Professional Corporation, 1991—1999. Of counsel Luce, Forward, Hamilton & Scripps LLP, New York City, 1999—2003, Duane Morris LLP, New York City, since 2003.
Member advisory committee civil practice New York State Office Court Administration, since 1987.