You may be checking the validity of your employees driving licence, if you read the blogs here on a regular basis then you will be checking the licences every six months as the initial part of your Risk Management strategy. But do you actually know what you are looking at?
Reading a driving licence is not a simple task if it is not something you do very often. If you then start to employ staff from the European Community then you will need to understand the licence in many different languages.
My suggestion to you is this, if you are not sure then check with a professional.