It’s not *that* hard to fire a government employee, though there is a bit of red tape; bosses just don’t have the guts to do it when they should, just as commonly happens in the private sector.
Government employees have good job security unless it is a temp job, of which there are many.
Salary depends on job and level of government and for states and localities, the wealth and living expenses of the area.
Government employment may be more compatible with being frum and having good family/life/Torah balance, since most government employees work a straight 8 hour day with no overtime or being texted at all hours.