Depends on what you do with the hours you actually work, as well as your previous history. There is a whole meta associated with this, but basically if you establish yourself as the person that people message first to get answers to questions, especially outside of your team, there is a very low chance you are getting fired.

What meta? I’m not familiar, do you have more context or a link?

There isn't a set guide to this. The idea is that you want people to view you as a loss in teams ability to get things done if you were ever to leave, but not in the sense of raw hours worked but the knowledge and decision making process.