If your employer asks you to do work you think is unsafe, your options are limited, as if you refuse to work your employment may be terminated. Two options are to suggest an alternate, safer way of doing the work to your employer, or requesting assignment to a different task at work.
Employers are not allowed to terminate the employment of an employee who is engaged in a "protected activity." Protected activities include raising health and/or safety concerns with their employers. If you think you may have had your employment terminated for raising these concerns, please call the Indiana Department of Labor's Whistleblower Protection Unit at 317-234-3946.