What State Should My Lawyer Be In? I'm Ca Based (hired For Travel Work By An Il Company) And Was Physically Assaulted By A Coworker While On A Work Trip In Ma.

I have spoken with both employment and personal injury attorneys based here in Los Angeles who have indicated that I have a strong case, but both of them have expressed to me their jurisdiction concerns since the company they would be litigating is based near Chicago, IL. While on a group work trip to Boston, MA, I was physically assaulted by a coworker. I later found out from multiple sources that he had quite an HR file with them, had been reprimanded multiple times, and ultimately fired by the company- only to be reinstated the week before the work trip due to being shortstaffed. The law firms I have spoken to have all indicated that they can only help me as far as what is specifically related to California law; would it be more appropriate to seek a lawyer based in Illinois? Or do I need to find a Law Firm with offices in all three states? The lawyers I have spoken with don’t seem to have an answer to this question. Thanks in advance