From my personal experience, working is not necessarily an issue. As our lawyer put it, “everyone works, so don’t stress about that”. The things they seemed mostly concerned about were whether or not you entered the country legally, if you’ve overstayed your visa for reasons that would exclude you, and issues with the law.
Some methods of entering the country are harder than others when it comes to the approval process, such as tourist visas.
This complete misunderstanding of “comeback” was surprisingly humorous, thank you.