With all my admiration for Robert Reich, I sent him/his staff an email inquiring what his salary was as a professor. I never got a answer.
Any ways, I did find an answer (I hope accurate) from the following:
Reich (who is actually just a mere law school graduate) raked in an impressive income of $242,613 from the taxpayer-funded University of California. Berkeley in 2013 despite teaching just a single course during one semester of the school year. (RELATED: Robert Reich Sticks It To Poor People With $242,613 Salary For Teaching ONE CLASS This Semester)
See also: Lydia DePillis, "Adjunct professors get poverty-level wages. Should their pay quintuple?" Washington Post