Legal Question in Civil Rights Law in Indiana

You'd need to speak with an attorney on this because there are not enough facts here to give you a specific answer. I can tell you generally, that economics is a permissible reason for firing someone. So, in general terms, yes, you could fire someone who was making more money than another employee. However, there are some very important considerations that may come into play, such as the age of the employee, whether that employee will be replaced and by whom, and various other factors. You may be giving the employee you fire a prima facie case of age discrimination (or sex, or race, or disability). As I said, not enough facts to give you a specific response.