Hello again and thank you for the additional information. Well, hopefully, this is a fact finding mission and will result in the employer concluding that there has been no unlawful harassment or discrimination. However, the unfortunate truth is that your husband has no special rights in terms of what his employer can do in this case unless he has those rights through an employment contract
or a company policy. In other words, "due process" only applies to criminal court cases and some cases under administrative law, as well as grievance procedures in some bargaining agreements. There is no such right for an employee of a private employer in the State of Missouri, or in any other State. Therefore, he cannot demand that he be shown any evidence. If the employer though, as I mentioned, gives him that right, then they must comply with their own policies.
As for implying that he is going to hire an attorney, that could ultimately backfire if he is an employee "at will
," which most employees in Missouri are. That means that his employer may terminate him for any, or no, reason and with no notice or warning unless the termination would violate an employment contract, company policy or employment discrimination law. So, unless he falls within one of the exceptions, hiring an attorney, at least in so far as his employer is concerned, would generally be fruitless because of the "at will" rule of employment.
That said, if he finds out that this employee has made false statements of fact about him, then he may have a defamation of character action he can file against her if his reputation is damaged by the statements. In that case, he would want to sit down afterward with a personal injury attorney who handles non-physical injury cases, to discuss the facts and whether it would be worth his time to file suit.
Please let me know if you need any clarification or have follow up questions for me. I would be glad to assist you further if I can.