This is not my area, but I believe there's nationwide employment law and then states have leeway to add their own regulations. I believe California and Massachusetts have decent worker's protection expansions to the federal laws. I think DC is pretty good too.
I don't know this for a fact, but I believe presidential appointees (such as the head of the coastguard referenced earlier) serve at the pleasure of the president and can be removed at any time. I don't know what the compensation rules would be.
@SerendipityJane
In a world where Michael Fanon's 75 year old mother has had shit thrown at her while raking her lawn, I would say, possibly not?
And then there's this:
https://edition.cnn.com/2022/06/05/us/wisconsin-judge-killed-attack/index.html