Legal Question in Employment Law in Illinois

Without more information it's impossible to say. Depends what standards, depends whether you are in a particular class of employees (women, racial minority...), depends whether others in your class are being systematically treated differently than other classes, a lot of things. So if you've been terminated you can talk to an attorney, file a complaint with the EEOC, file for unemployment, etc. But everyone will need more information than you are providing here. Sorry.