Wrongful termination occurs whenever a person is fired or laid off illegally (i.e., sexual harassment, in violation of anti-discrimination or labor laws, in retaliation for the employee's previously filing a complaint against his superiors, etc.). In such a case, the wronged individual is usually advised to not sign anything presented to him by his former employer, and to seek legal counsel. When this occurs, an attorney who has expertise in labor laws can offer sound legal advice, bring justice to the aggrieved party, and either reinstate his client or reach a settlement upon a mutually agreed severance package. To help their attorneys win their cases, it is useful for the former employee to provide documentation on key events, his personnel file, and to not react negatively against his former employer. The latter especially can be harmful to his case.