Can I file for "Tortious Interference" for coertion and intimidation by my employer against my union

My questions revolves around discrimination and a hostile work environment at my workplace. I already received my right to sue letters from the EEOC and have already filed a timely complaint.

I am now considering piggybacking a State cause of action.

I would like to know if I can include in my coming (IIED) intentional infliction of emotional distress (State) complaint a charge for actions of "tortious interference" by my employer for intimidating or coercing my union representatives from properly representing me after filing four grievances?

My grievances never made it to the second step, and were later determined to have been shredded.

I became a known "SOX" whistleblower over shareholder fraud and OSHA non compliance violations by my employer.

I have a solid 20+ year work history, and never filed a single grievance until the hostile work environment became unbearable.

What is the State code should it be found possible to file for "Tortious Interference"?

Thanks for considering my question and for any response offered.