Swiss Criminal Procedure Code
(Criminal Procedure Code, CrimPC)

¹ The au­thor­ity con­duct­ing the ex­am­in­a­tion hear­ing shall cau­tion the wit­ness at the be­gin­ning of each hear­ing with re­gard to the ob­lig­a­tions to testi­fy and to tell the truth and ad­vise the wit­ness of the pen­al­ties for per­jury in terms of Art­icle 307 SCC¹⁰³. If no cau­tion is giv­en, the ex­am­in­a­tion hear­ing is in­val­id.

² The au­thor­ity con­duct­ing the ex­am­in­a­tion hear­ing shall ques­tion each wit­ness at the be­gin­ning of the first hear­ing as to his or her re­la­tion­ship with the parties and as to oth­er cir­cum­stances that may be rel­ev­ant to the wit­ness's cred­ib­il­ity.

³ It shall cau­tion the wit­ness as to the rights to re­fuse to testi­fy as soon as it be­comes ap­par­ent through ques­tion­ing or the files that such rights ap­ply. If no cau­tion is giv­en and the wit­ness sub­sequently ex­er­cises the right to re­fuse to testi­fy, the ex­am­in­a­tion hear­ing is in­ad­miss­ible.