- With claims department INA, St. Louis, 1961-1968. Associate Holtkamp & Amelung, 1968-1970, partner, 1970-1973. Senior partner, principal, Chief Executive Officer Amelung, Wulff & Willenbrock Professional Corporation, since 1973.
Served with United States Army Reserve, 1961-1967. Member Association of Trial Lawyers of America, Missouri Bar Association, Bar Association Metropolitan St. Louis (award of merit 1978, member faculty Trial Practice Institute), Association Defense Counsel (president 1973-1974), Defense Research Institute, Missouri Organization Defense Counsel (board directors 1994-2000), American Judicature Society.