Law & liability
Liability, warranty, terms, data protection and retention periods.
Law in a workshop rarely starts with a statute and almost always with a question: who is liable if something happens after the repair — and how can that be shown later? The answer depends less on the rule than on the documentation: what was agreed, what was approved and what the customer declined.
Two terms get confused regularly. Statutory liability for defects is what you answer for because you did the work; a guarantee is a voluntary promise, usually from the manufacturer. Treat them as the same and you promise more at the counter than you owe — then regret a commitment nobody asked for.
Then there are the areas that disappear in daily work and still get checked: your own terms and conditions, how customer and vehicle data are handled, and the retention of documents. The specific periods and provisions differ by market and sit in the individual articles; what comes first here is the question you have to answer in any country.