Minor but important detail: It all depends on their interpretation of the handbook. And if their handbook doesn't have the "at-will employment" boiler, plus an escape hatch that allows them to quickly fire someone who steps over the line, then they should fire their HR director next.
This is not entirely true in most jurisdicitions. For example, you state in the handbook that you are at will employee, but in reality you always follow certain procedures when terminating someone. These procedure can cause a resonable reliance on the part of the employee which can be used to legally enforce these policies. Basically you can't say one thing, act another way, and then suddenly go back and try to enforce the language in the handbook.
	
 
 


