Hello I take it your job offer is for Switzerland and written in German. If so send me a pdf version of it and I will let you know what is missing.

I guess the first problem you will have is it will mainly reference the work manual which you will not see till you start but that is more or less normal
If it is from a major player UBS CS Nestle etc then you will more than likely get the standard offer.

Note that while it makes sense to have a delayed appearance of your family I would strongly suggest legally bringing them over at the same time. There are certain laws later in the day ie 3 years down the line that are different if your family come simuiltaneously to later. Clearly they will not move just for the paperwork. If you need to deregister form the old place then clearly this is not ghoing to work.

Oh and the charge is a beer