[header] How to identify at will employment exceptions [title] Evaluate your employer's reasons for terminating your employment. [step] Under the public policy exception, employers cannot fire an employee for doing something that is in the public interest. Your employer also can't fire you for refusing to do something that would violate the law or undermine some public interest. 
[substeps] It's not common for an employer to openly state a reason for terminating you that violates public policy-but it can happen. For example, suppose your employer has been sued after a customer slipped and fell.