He has had academic teaching posts as well as working for private consulting firms, and has had various appointments on governmental and other panels and boards.
[5] He was managing director of Network Economics Consulting Group (NECG) from 1996 until 2004,[2] when it was acquired by CRA International[6] where he became vice president and regional head, Asia Pacific.
[citation needed] He chaired the Australian Intellectual Property and Competition Review Committee set up by the Australian Government in 1999 to review Australia's intellectual property laws as they relate to competition policy.
[9] Ergas was an independent contributor to a paper submitted to the U.S. Federal Communications Commission in 2010, which cautioned against imposing regulations that, while aimed at net neutrality, may cause costs that exceed the expected benefits.
[a][4] In the 2016 Australia Day Honours, Ergas was made an Officer of the Order of Australia for "distinguished service to infrastructure economics, and to higher education, to public policy development and review, and as a supporter of emerging artists".