Some companies offer sponsored degrees so students can get work experience at the company while they study towards a qualification that will enhance their skillsets, becoming graduates who know more about their work.
With sponsored courses and degree apprenticeships the arrangement is typically that you would work with the company during holidays or part time, and study at university for a degree related to your job for the rest of the time. It's much the same way that apprenticeships work but instead of a NVQ, you will end up with a degree.
The advantage of employer sponsored degrees is that you not only get a salary, like any other company employee, but you also get 3 years of building up valuable work experience.