Are sick notes from abroad valid?
Yes — sick notes from abroad are just as valid as sick notes from Germany!
Details required in a sick note (from abroad):
1) It should specify that you are unable to work due to the illness/injury
2) Expected duration you will be unable to work
Reporting requirements if you are employed:
1) The sick note must be submitted to your employer immediately, at the latest within 3 days of the start of your illness/injury
2) Your current location (address) must be shared with your employer
Do I need a statement from my Private Health provider?
No — this is not required for people who are privately insured.