Company Rules

So my sibling and I work at Chic-fil-A and I was wondering if they would really have an issue if two people who are related work together. For context There’s a four year age gap, We are both BOH not shift leaders and we get our jobs done without any problem. I was told some company don’t like siblings or relatives of any kind working together and I wanted to know if that was the case here.

Long story short: Is it okay if that I work at chic-fil-a with my sibling or will the owner have an issue with that?