Mark began his career with the UA in 1983 when he was initiated into Plumbers Local 24 in Newark, New Jersey. He was elected Business Agent in 1994 and Business Manager in 1997. His talents and leadership brought him to the United Association General Office in 2007, where he has served as International Representative and Administrative Assistant to the General President. He served five-year terms as General Secretary-Treasurer and as General President prior to being re-elected to a second five-year term as General President.