If you can prove the accusations being made are false or not able to be substantiated, then you have a claim for defamation
against the employer for spreading this information about you. The absolute defense to defamation is the truth, so if the employer has proof of the allegations, then you may not succeed on the defamation claim. As far as hostile work environment, this is a legal term of art and only applies to an environment of hostility created by discrimination based upon race, sex, age, disability or one of the other recognized discriminatory reasons. It is not intended to be "a code of civility in the workplace" according to the Supreme Court. So if they were just harassing you in general and it was not based on one of the discriminatory reasons, then you have no claim. If there is some evidence of a discriminatory reason, then you must file a complaint with the EEOC and/or the state commission on human rights
and then you could seek to file a discrimination suit against the employer. You should consult with an attorney to show them what evidence you have regarding the claims the employer is spreading to other employers about you and determine whether or not it is sufficient to file the defamation claim. If you cannot afford an attorney, contact the state bar about the pro bono referral program.
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