I came in here to post this exact quote. This is just super ridiculous. Any learning you did while employed is property of that employer. I seriously hope there no one comes up with a device that makes that possible to enforce.
Now I want to read a dystopian transhumanist novel where mind uploading is commonplace, but corporations force you to checkout a new "branch" of your mind-state while working for them, enforcing a rollback to a pre-employment commit after terminating employment.