Der Änderungsantrag. A change to a German project plan goes through a formal request: what is to change, why, what it costs, what it moves, who approves. The plan can be changed. It cannot be drifted away from.
Work owed and effort owed
German contract law distinguishes the Werkvertrag, which owes a result, from the Dienstvertrag, which owes an effort properly performed. The distinction determines liability, and it turns on whether what was promised was an outcome or a way of working.
The nine phases
Die Leistungsphasen. German building projects run through nine defined service phases, from basic evaluation through preliminary design, permit planning, execution planning, tendering, construction supervision and final documentation. Each phase has a defined output and a defined share of the fee. The sequence is in the fee ordinance itself.
The what and the how
German engineering practice separates two documents, both defined in DIN 69901-5 and VDI 2519. The Lastenheft is written by the customer and states what is required and why — deliberately solution-neutral. The Pflichtenheft is written by the supplier in response and states how it will be built.
The what and the how are different documents, by different authors, in a fixed order, and together they form the contractual basis of the project.
Cobbler, stay with your lasts
Cobbler, stay with your lasts.
The story is from Pliny the Elder. A shoemaker criticized the sandal in a painting by Apelles, and the painter corrected it. When the cobbler went on to criticize the leg, the painter told him to stop.
The German use of the phrase is not an instruction in modesty. It asserts the opposite of what it appears to say: within your last, your judgment outranks anyone’s.
No reminder needed when the date was agreed
German law normally requires the creditor to send a reminder before the debtor is formally in default. But where the parties have fixed a performance date by the calendar, no reminder is required at all — § 286 Abs. 2 Nr. 1 BGB. Default begins the moment the date passes.
The Latin maxim is quoted in German textbooks: dies interpellat pro homine — the day admonishes in place of the man.
A German who agreed a date does not expect to be chased, and the law agrees with him.
The sworn expert
The term Sachverständiger, expert, is not legally protected in Germany. Anyone insufficiently qualified may call themselves one and offer their services on the market.
So German law built a second tier: öffentlich bestellt und vereidigt, publicly appointed and sworn. Only specialists whose knowledge lies considerably above average are appointed, after an exacting examination procedure, and their work then stands under the permanent supervision of the appointing body — the chambers of crafts, of industry and commerce, of architects, of engineers.
One line from the guidance issued by the Regensburg chamber states the principle exactly: performing your profession properly is not yet sufficient proof of special expertise.
Doing the job well is the floor, not the qualification.
Faust
Faust by Johann Wolfgang von Goethe (1808, 1832). In Faust’s pact with Mephistopheles, Faust, a scholar, is disillusioned with life and craves deeper meaning and fulfillment. Mephistopheles, the devil, offers to serve Faust in life in exchange for Faust’s soul in the afterlife.
The scene is structured like a contract negotiation, with both parties meticulously defining the terms and consequences. Mephistopheles is the classic hardball negotiator, pressing Faust to commit to a deal that appears advantageous but has dire consequences. Faust, in turn, tries to outwit him by adding specific conditions. The emphasis on structure, explicit terms, and legalistic language reflects the German preference for clearly defined agreements, logical arguments, and strict adherence to commitments.