In essence, two things:

- Your ability to do your job and meet your obligations. If you can take 3 months off and still meet the expectations set for you then that might be ok. It might also be a sign that you need a bigger challenge, but that's a different topic.

- Yourself. If you transform yourself from a serf that works for money into a key contributor in an enterprise, then the quality of your engagement with your employer changes to a level where you feel responsible and accountable for both your own success and that of the company.