I was hurt in a truck wreck. I could not get the case settled and I filed a lawsuit. Now the trucking company is asking me all sorts of personal questions. Can they do that?
Yes, within limits. A person who is sued has the right to ask you information about your claim and also questions reasonably designed to find evidence that might be admissible at trial. Thus, if you allege that you hurt your back in a lawsuit, they have the right to know if you ever hurt your back before and, if so, how you were hurt and what medical treatment you received.
If you claim you lost wage as a result of the accident the company has a right to know how much money you make and see documentation of your wage loss.