I'm in Maryland, which is home to the Social Security Administration, as well as the Center for Medicare and Medicaid Services. That and the fact that we're so close to DC, there are tons of federal employees in this area, and yes, many of them do hold side jobs. Definitely not all of them, but I know many that might have a store in their home to sell clothing in the evenings, lawyers who offer other services for the community, people who sell real estate, etc. It definitely exists, though it doesn't mean they're not productive in their own job though.