After having a threat of being made redundant I allowed myself to learn the law... When with a later employer I was made redundant I knew what I was entitled to and what not. It does make a difference and it is worth investing the CHF 20 or so in the relevant books. Of course if you cannot read German they do not help much.
Another thing I never mentioned is actually taking out insurance, Rechtsschutzversicherung (yes Mark another one!!!) to protect you against legal costs. This is remarkably "gunstig" as you find out when you make your first appointment with a lawyer and find out what the fees are like.
Richard