My boss has docked my check and when I question it, she says she can do whatever she wants.
Workers' Compensation Lawyer
It depends on what was deducted. There are federal and Illinois state laws that govern what employers can deduct from employee pay checks. Some deductions are legal, some are illegal, and others may require the employee's written consent. I'd suggest contacting an employment attorney in Lake County. Explain to them what was deducted and why it doesn't seem right to you.