As Justin Sink of Government Executive reports:
Gallup recently found 44 percent of the federal workforce maintains a financial well-being that is “strong and consistent,” 10 percentage points higher than the rest of the U.S. workforce. About 39 percent of feds were labeled as “struggling” (moderate or inconsistent financial well-being), while just 17 percent were “suffering” (low and inconsistent well-being). That compares to 42 percent of all workers who are struggling, and 24 percent that are suffering.
Federal workers, of course, enjoy more job security. According to a recent report, it takes some 170 days to terminate the employment of an underperforming bureaucrat. Which is plenty of time for a job search and you can copy the resume and send it around on government time and equipment.
And, finally some bureaucrats do very well, indeed, as:
About 308,000 non-Defense federal employees earned six figures in 2014, while about 17,000 made more than $200,000. The median federal employee salary — not accounting for benefits — is about $78,000 annually, while the median U.S. salary is about $51,000.

