[AnimalMuppet]

In the US, it depends on state law, at least to some degree. In some states you can be fired without cause and without recourse; in others you can't.

Note well: I am not a labor-law lawyer. There may be some nuances and details here that escape me.

[lazide]

The only non-At will employment state is Montana. [https://www.law.cornell.edu/wex/at-will_employment]