As with most companies, the only way to advance in the research side of the company beyond your degree is to either step on a lot of toes or transfer to a non-research position (referred to as a lateral promotion). The company will pay your tuition if you wish to get an advanced degree, but you have do it on your own time, and you must get a degree related to your current position (no getting an MBA for the scientists).
A method for saving money (which is industry-wide) is to outsource many of the jobs to contractors in order to avoid paying for benifits. Roche is guilty of this and it makes those in facilities maintenence very bitter and hard to work with.