I assume you mean "at-will employment"?
Right-to-work laws, in the US, are laws saying that employees cannot be forced to join a union as a prerequisite to employment.
At-will employment laws, again in the US, are laws saying that employees can be terminated for any or no reason, except for a list of specific reasons like race, sex, age, religion, and probably a few others. Unless there's some kind of employment contract, which the majority of jobs in the US don't have.