Workers' compensation is a form of insurance. The idea behind workers' compensation is to establish a compromise between the interests of both employer and the injured employee. The worker is guaranteed certain limited coverage for medical bills and lost income and the employer gets a guarantee that the employee will not sue the company for any claimed negligence. So what happens in Illinois if the employee is fired after filing a claim for workers' compensation? A St. Clair County woman is suing to find out just that.