The text quoted by Mullhollander refers to the Zurich scale. Here it is: http://www.lohnfortzahlung.ch/normen...zurcher-skala/
and at the far right you can click to get the Basle or the Bern scale.
These scales are not sacrosanct, but many employment contracts refer to them.
Another term in Mullhollander's quote ist "standard employment contract or collective employment agreement" which, in German, is Normvertrag or Gesamtarbeitsvertrag (GAV). Both of these are standardised agreed products of negotiation between staff unions and companies and based on various court judgments.
Not all fields of employment are governed by such an agreement, but where they exist, they can be enforced. The personal, individual contract sometimes does not [need to] specify all the details (including things like wages when ill, or doctor's certificates, etc.), because they are already in that standard documement.
I agree with 10pixels that the shortest route for you to find out what you need should be the HR department of your employer. However, should you want to look things up yourself, here's a list of areas for which a GAV exists. http://www.seco.admin.ch/themen/00385/00420/00430/