If your job requires you to use a respirator, your employer is required to do three things. what is missing from the list? have you medically evaluated to determine that it is safe for you to wear a respirator train you on how and when to use a respirator a. fit checking your respirator before each use b. fit testing you for the respirator brand you desire c. fit checking your respirator after each use d. fit test you for the appropriate respirator size and type