I will go with the 12-week thing on 1 condition. You will be hired at a lower rate than all your co-workers doing the same job. You will have to opt-in for this “benefit”. You have to pay for all your other benefits so why would this benefit be any different. A business is not in the market to be social engineers or a parasitic welfare state apart from the existing government owned and run parasitic welfare state.
The cost is divided between the employee and the employer as the employee is by law enrolled in what is called the Krankenkasse system. The fees are paid by both the employer and the employee. This is a much better system than the stupid 0bama care.
There are of course different systems in Germany depending on your occupation. My brother for example had a private insurance which he had to pay himself because he was the chief of the criminal police in the town he worked and live. He is getting an excellent pension from the city