Swiss Civil Code

¹ Chil­dren with ca­pa­city of judge­ment who are un­der par­ent­al re­spons­ib­il­ity may, with their par­ents’ con­sent, act for the fam­ily as a whole, but in so do­ing en­gage not them­selves but their par­ents.³⁹⁶

² If the par­ents are pre­ven­ted from act­ing or if they have in­terests in a mat­ter that con­flict with those of the child, the child pro­tec­tion au­thor­ity shall ap­point a deputy or reg­u­late the mat­ter it­self.³⁹⁷

³ In the event of a con­flict of in­terests, the par­ents' powers be­come auto­mat­ic­ally void by law in re­la­tion to the mat­ter con­cerned.³⁹⁸