Michael began his career as an apprentice in the former Local Union 65 in 1985 (it then merged in 1988 to form Local Union 33) and graduated to journeyperson status in 1989. He was elected to the Local 33 Executive Board in 2000 and became a Business Representative in July 2002. In 2012, Michael became President/Business Manager of his local. On August 1, 2018, he became a member of the SMART General Executive Council as the 9th General Vice President.
In September 2019, Michael became Director of Construction Craft Services. In that role, he helped manage relations with sheet metal and construction industry stakeholders and other Unions. Soon after, upon Joseph Powell’s election to General Secretary Treasurer, Coleman transitioned to his current role as Assistant to the General President.