So assume you have a degree or work experience in field X, then decide you want to change and try field Y for 2-10 years or so for whatever reason. Or become a stay at home parent.
Even if you have a degree or work experience in field X, will you run into major problems if you try to go back to it (ie employers will not hire you) after a hiatus, or does it vary by field?
What about doing a masters degree in the field when you want to go back into it, would that be a good way to segue back into it?
Being a consultant to keep up to date doesn’t really seem like a realistic option, but I have heard people say that that is something they’ve done to keep up to date with a certain field and keep their skills decent.