I would suggest that there’s an element of self selection here.

Those who go on to further education would tend (and I do use the word “tend”) to be those who aggressively seek opportunities – and opportunities are available. They apply themselves to gain those degrees and that is part of the aptitude that helps in a workplace along with the skillsets gained.

A little chicken-and-egg in that you’re implying a causal relationship (education causes more likelihood to gain employment) though it may potentially (and more likely) be a two way relationship: those that apply themselves, gain more skills, but those same sorts of people who *could* do a PhD, Masters, Bachelors etc but choose not to may be just as employable and not suffer from unemployment.

PS: tab on comment form does not go to the submit comment form input element 🙁 Bad design. Bad.