Wrongful termination happens when an employee is discharged from employment for illegal reasons or if company policy is violated when the employee is fired.
In many cases, unless there is a contract or bargaining agreement, employees are considered covered under employment at will, which means your employer doesn't need a reason to fire you. However an employee can be wrongfully terminated if discrimination is involved in the termination, if public policy is violated, or if company policy states guidelines for termination.
Here's more on wrongful termination and what rights an employee has when they believe they have been wrongfully terminated:
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