Key legal question
Whether cantonal rules on changing family allowance funds must follow the AHV system and require employer cancellation letters.
Extracted holding
Cantons have a broad margin under Art. 17 Abs. 2 FamZG and may regulate fund switches differently from the AHV system; Freiburg's requirement of employer cancellation letters is compatible with federal law.
Extracted reasoning
FamZG is a framework law and does not impose full adoption of AHV rules. The legislature deliberately did not make AHV rules mandatory, but allowed cantons to preserve their own organizational solutions. The employer-choice model and cancellation-letter requirement are not disproportionate or unreasonable.