If all types of euthanasia are unlawful under the Thai criminal law, it is not necessarily so under Thai civil law.
When euthanasia, whether active or passive, is performed without the patient’s consent, the doctor will be charged with a tort, and is required to pay the reparation. In case where euthanasia is accomplished with the patient’s own consent, the principle volunti non fit injuria is applied as a general principle of law even though the very same act would be criminally condemned.