Daughter’s father asked for her S.S#, he’s in trouble with IRS and wants to file her as an employee..?

Location: TX

My (32F) daughter’s father (31M, ex of 3 years) has asked me for our four year old daughter’s social security number. Apparently he’s in some tangle with the IRS because he owns two small businesses and hasn’t been filing/paying his taxes or something along those lines for several years now. He claims he has an accountant and that they need our daughter’s social. I handle her health insurance and pediatric appointments, so he’s never needed it before. The reason I’m hesitant to give it to him is because he claims that he is filing our 4 year old daughter, as an employee of his LLC. He owns two auto shop garages he wants to claim she works for. I’m assuming he is trying to do whatever he can to get whatever tax credits he can. I’m not sure how all that works, but it doesn’t sound very legitimate to me. For a minor to legally be considered an employee, don’t they still earn pay? Wouldn’t there some sort of W-2 or an occurrence where her S.S# would have had to been used before?

I asked him if I could get some clarification on this and what exactly it entails, but he just lashed out on me for“researching” about it, saying I probably asked ChatGPT instead of just helping him.

I’m not trying to be difficult, in fact I still find myself trying to appease him in ways because he can get truly scary sometimes when I don’t – but this just sounds kind of sketchy to me. I also filed our daughter as my dependent last year after learning he hadn’t filed in years. Since I actually do cover more of her care, I went ahead and claimed her for 2024. I just hadn’t before to avoid an issue with him. I feel like regardless of this, he’ll still try to claim her for last year too – along with backfilling for every year prior so he’ll owe as little as possible… which I’m pretty sure would end up flagging me with the IRS.

So my question is, should I just release it to him or do I have a right to ask him about it if I don’t feel comfortable and want some clarification first? What could happen if he does illegally file her as an employee?

Thank you all in advance.