From 1998 to 2009 he was Parliamentary State Secretary to the Federal Minister for Transport, Construction and Housing and from 2005 Federal Minister for Transport, Construction and Urban Development.
He then worked as an educational consultant at the advice center for parents, children and young people in Alsdorf until 1986, and as its director since 1979.
After the 2009 federal election and the subsequent change in government, Großmann left office in October 2009.
In his eleven years in office, he served under five different construction and transport ministers.
[3] As Parliamentary State Secretary, Achim Großmann was a member of the supervisory board of Deutsche Bahn and was involved in the preparations for the IPO.