@rstoddart Where I work, being indispensable like that wouldn't save your job at all. Management would just treat you as dispensable anyway and expect those who are left to somehow maintain what only you could maintain, no matter how unreasonable that may be.
@rxantos In my experience it was even. Maybe in Washington, were there are a lot of political types, but in the rest of the country, where the real work gets done, there is no difference at all. Plenty of Wally's, but many more very good workers. I claim 35 years government service as my source. It wasn't like 'On the Waterfront' where a guy sits up in the rafters reading comic books all day. There were some like that, but very few.