"Of the 50 states, 38, as well as the District of Columbia, allow you to record a conversation to which you are a party without informing the other parties you are doing so. Federal wiretap statutes also permit one-party-consent recording of telephone conversations in most circumstances.1 Twelve states forbid the recording of private conversations without the consent of all parties. Those states are California, Connecticut, Florida, Illinois, Maryland, Massachusetts, Michigan, Montana, Nevada, New Hampshire, Pennsylvania and Washington.2"

I am providing this quote from the First Amendment Handbook.

This is because I have had employees in situations where they could have proven much of the stalking behavior of their abuser if they had secretly recorded interactions. They don't record because it seems to be "common knowledge" that you can't record conversations, but I believe that this has the status of an urban myth. When I've looked it up, most laws apply solely to telephone and non-private conversations. Only twelve states forbid the recording of private conversations without the consent of all parties, and Indiana is not one of them. I was able to get a workplace restraining order against one of my worker's stalker, but her personal restraining order was not granted (!) because the judge determined that the stalker was pursuing reasonable business with her (seeking change in childcare, etc.) If she had recorded the actual conversations she would have definitely won on this, because the violence in voice and manner projected by the ex who was harassing her. Instead, the stalker accomplished what he wanted, driving her out of her job and income, and into hiding. I have lost two employees in the last six months due to the harassment they are under. My pain is small compared to what they are going through.

The only Indiana code information that I have found is:

Ind. Code Ann. § 35-33.5-1-5: The recording or acquiring of the contents of a telephonic or telegraphic communication by someone who is neither the sender nor the receiver is a felony and can be the basis for civil liability. Ind. Code Ann. §§ 35-33.5-5-4, -5.

Civil liability may require the payment of actual damages, $100 per day for each day of violation or $1,000 — whichever is greater — and punitive damages, court costs and attorney fees. Ind. Code Ann. § 35-33.5-5-4.

Regardless of the state, most sources that I have already researched imply that it is almost always illegal to record a conversation to which you are not a party. This does not concern me since the situations I'm concerned about always include a participating party. These people need to be believed in court and with the police, and many recorders are small, voice activated, and can be in a purse or pocket when needed.

Can anyone out there weigh in on this?

You seem to have done some very thorough research. The only thing you can do is to present this to these employees. You can also suggest that they speak with someone in the domestic violence department in your area.