Over the course of his career, Rein has researched, taught, and published in the areas of popular culture, crisis management, communication in sports and place marketing.
As a faculty member at Harvard University from 1965 to 1969, Rein was director of the public speaking program, where he taught students such as Al Gore, Lou Dobbs, William Weld, and Tommy Lee Jones.
In the political sphere, he served as a communication advisor for such campaigns as Richard M. Daley, Adlai Stevenson III, Michael Howlett, Jr. , Harold Washington, Paul Simon, Neal Hartigan and Lisa Madigan.
Rein has also been a communication consultant to many companies and organizations, including IBM, Mott’s, Ernst & Young, Internal Revenue Service, Honeywell, Motorola, and the Attorneys’ Liability Assurance Society (ALAS).
Both within the U.S. and internationally, Rein has traveled and served as a consultant to cities, states, and nations including Norway, Sweden, Portugal, Argentina and Panama.