Most private sector employees in the US are employed at will, which means that they can be fired for any reason or for no reason. There’s a specific set of reas

Most private sector employees in the US are employed at will, which means that they can be fired for any reason or for no reason. There’s a specific set of reasons that you can’t fire an employee for, including some kinds of discrimination (race, sex, religion, and a few other categories). You don’t necessarily need to violate an employee handbook, although if there is a risk that the employer is accused of discrimination, a violation of company rules could help the employer in case there’s a lawsuit.