Illinois is an "employment at-will" state, meaning that an employer or employee may terminate the relationship at any time, without any reason or cause. As long as the employer doesn't violate these rights, an atwill employee can be terminated, or fired, for no reason at all.Retaliation for filing a complaint with Office of Labor Standards is prohibited. View and download the current Chicago Labor Law Public Notices. For more information or to file a complaint about an employer's practices, please call the Workplace Rights Hotline at 1-844-740-5076 or use the complaint form. Employers are required to pay the employee their final earned compensation no later than the end of their next regularly scheduled payroll after termination.