From TFA:
In 2014, the Washington Post reported, Mullin received some scrutiny from the Office of Congressional Ethics for his continuing to advertise for and serve as an officer or on the board of Mullin Plumbing, Inc., and related companies while he served in Congress. An OCE report found that Mullin received $600,000 from the companies in income in 2013.
So in a way, he does work for himself.
