In Switzerland, articles 111 to 117 of the Swiss Criminal Code[1] detail the various scenarios in which the killing of another person is punishable.
[2][3] Article 112 is first degree murder (Mord, Assassinat or Assassinio) and is a lex specialis to article 111 and envisages a situation where a person has intentionally caused the death of another person with either particular cruelty or an odious motive or goal.
[5] Article 113 criminalises the intentional homicide committed by a person in an emotional state, which a rational person would not regard as being overly excessive given the circumstances, which is classified as a murder of passion (Totschlag, Meurtre passionnel, or Omicidio passionale).
"[7] A person who, upon request by the victim, intentionally causes a mercy killing (Tötung auf Verlangern, Meurtre sur demande de la victime, or Omicido su richiesta della vittima) is, according to article 114, punishable by a term of imprisonment not exceeding three years or a fine.
[9] Article 115 punishes a person who intentionally and for an immoral motive incites or assists a person to commit suicide (Verleitung und Beihilfe zum Selbstmord, Incitation et assistance au suicide, Istigazione e aiuto al suicido).