Assistant district attorney Kings County, New York, 1973—1975. Associate Siff & Newman, Professional Corporation, New York City, 1975—1981, partner, 1982—1983, Peter E. DeBlasio Professional Corporation, New York City, 1984—1986. Senior partner DiJoseph and Gluck, since 1986.
Lecturer appellate practice. Consultant in field.
- Penal law and the Code of criminal procedure of the State of New York, with amendments passed by the Legislature to the end of the regular session of 1942
Member of Lawyer to Lawyer Consultation Panel, New York State Trial Lawyers Association, National District Attorneys Association, New York County Lawyers Association, New York State Bar Association (award 1981), American Bar Association (committee rules criminal procedure and evidence 1977-1979, vice chairman committee appellate practice since 1983), Association Trial Lawyers America.