Chairman, trustee Brentwood School, Los Angeles, 1986-1987. Member American Bar Association (litigation and international law construction forum sections), California Bar Asn. (bar examiners committee 1985-1986), New York State Bar Association, Florida Bar Association, Los Angeles County Bar Association (past member juvenile court and judiciary committees, trial lawyer section), American Arbitration Association (member large complex case panel, specialty panels in construction, employment, healthcare, intellectual property).
Associate Donovan, Leisure, Newton & Irvine, New York City, 1962-1964. Special agent Federal Bureau of Investigation, Washington, 1964-1967. Associate O'Melveny & Myers, Los Angeles, 1963, 68-72.
Partner Costello Manfredi & Thorpe, 1974—1978, Costello & Walcher, Los Angeles, 1981—1985, Proskauer, Rose, Los Angeles, 1985-1989. Professional neutral Santa Monica, California, since 1989. Adjunct associate professor law, evidence and criminal procedure Southwestern University School Law, Los Angeles, 1970-1973, international business translations University Southern California Law Center, Los Angeles, 1973-1975.
Judge pro tempore Los Angeles Municipal Court, since 1971. Chairman board directors Year Laboratories Inc., Los Angeles. Instructor arbitration/mediation Loyola Law School.
Dispute resolution lecturer American Arbitration Association, American Bar Association, California Continuing Education of the Bar, Center for Professional Education, University California.